Trial Outcomes & Findings for Study of Long-term Efficacy and Mechanisms Underlying the Impact of a Web-based Sexual and Relationship Health Promotion Program With Young Adult Community College Students (NCT NCT04950686)

Results Overview

Relationship satisfaction will be assessed using 7-items (e.g., "How well does your partner meet your needs?") rated on a 5-point Likert-type scale from 1 (poorly) to 5 (extremely well); higher scores indicate greater relationship satisfaction; range = 1-5; higher scores indicate a more favorable outcome. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

2184 participants

Primary outcome timeframe

6-month follow-up

Results posted on

2025-08-14

Participant Flow

2184 students consented to participate in the study and were sent the pretest.1647 students completed pretest. Students who did not complete pretest, were dropped from the study and were not considered part of the study sample.

Participant milestones

Participant milestones
Measure	Intervention - Media Aware for Young Adults This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Active Control - Health Aware for Young Adults This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules. Health Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults.	Delayed Intervention Control Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.
Overall Study STARTED	551	508	588
Overall Study Completed Posttest	376	348	461
Overall Study Completed 6-month Follow-up	342	335	402
Overall Study Completed 12-month Follow-up	330	317	390
Overall Study COMPLETED	330	317	390
Overall Study NOT COMPLETED	221	191	198

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Not all participants reported male or female as their sex.

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules. Health Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Total n=1647 Participants Total of all reporting groups
Age, Categorical <=18 years	0 Participants n=551 Participants	0 Participants n=508 Participants	0 Participants n=588 Participants	0 Participants n=1647 Participants
Age, Categorical Between 18 and 65 years	551 Participants n=551 Participants	508 Participants n=508 Participants	588 Participants n=588 Participants	1647 Participants n=1647 Participants
Age, Categorical >=65 years	0 Participants n=551 Participants	0 Participants n=508 Participants	0 Participants n=588 Participants	0 Participants n=1647 Participants
Age, Continuous	18.50 years STANDARD_DEVIATION 0.5 • n=551 Participants	18.51 years STANDARD_DEVIATION 0.5 • n=508 Participants	18.45 years STANDARD_DEVIATION 0.5 • n=588 Participants	18.49 years STANDARD_DEVIATION 0.5 • n=1647 Participants
Sex: Female, Male Female	341 Participants n=512 Participants • Not all participants reported male or female as their sex.	318 Participants n=490 Participants • Not all participants reported male or female as their sex.	338 Participants n=544 Participants • Not all participants reported male or female as their sex.	997 Participants n=1546 Participants • Not all participants reported male or female as their sex.
Sex: Female, Male Male	171 Participants n=512 Participants • Not all participants reported male or female as their sex.	172 Participants n=490 Participants • Not all participants reported male or female as their sex.	206 Participants n=544 Participants • Not all participants reported male or female as their sex.	549 Participants n=1546 Participants • Not all participants reported male or female as their sex.
Ethnicity (NIH/OMB) Hispanic or Latino	132 Participants n=551 Participants	181 Participants n=508 Participants	213 Participants n=588 Participants	526 Participants n=1647 Participants
Ethnicity (NIH/OMB) Not Hispanic or Latino	419 Participants n=551 Participants	327 Participants n=508 Participants	375 Participants n=588 Participants	1121 Participants n=1647 Participants
Ethnicity (NIH/OMB) Unknown or Not Reported	0 Participants n=551 Participants	0 Participants n=508 Participants	0 Participants n=588 Participants	0 Participants n=1647 Participants
Race (NIH/OMB) American Indian or Alaska Native	8 Participants n=551 Participants	8 Participants n=508 Participants	19 Participants n=588 Participants	35 Participants n=1647 Participants
Race (NIH/OMB) Asian	110 Participants n=551 Participants	27 Participants n=508 Participants	44 Participants n=588 Participants	181 Participants n=1647 Participants
Race (NIH/OMB) Native Hawaiian or Other Pacific Islander	5 Participants n=551 Participants	5 Participants n=508 Participants	6 Participants n=588 Participants	16 Participants n=1647 Participants
Race (NIH/OMB) Black or African American	77 Participants n=551 Participants	56 Participants n=508 Participants	66 Participants n=588 Participants	199 Participants n=1647 Participants
Race (NIH/OMB) White	242 Participants n=551 Participants	335 Participants n=508 Participants	323 Participants n=588 Participants	900 Participants n=1647 Participants
Race (NIH/OMB) More than one race	63 Participants n=551 Participants	32 Participants n=508 Participants	63 Participants n=588 Participants	158 Participants n=1647 Participants
Race (NIH/OMB) Unknown or Not Reported	46 Participants n=551 Participants	45 Participants n=508 Participants	67 Participants n=588 Participants	158 Participants n=1647 Participants
Region of Enrollment United States	551 participants n=551 Participants	508 participants n=508 Participants	588 participants n=588 Participants	1647 participants n=1647 Participants

PRIMARY outcome

Timeframe: posttest (4-weeks after pretest)

Population: Question only asked of participants in a relationship.

Relationship satisfaction will be assessed using 7-items (e.g., "How well does your partner meet your needs?") rated on a 5-point Likert-type scale from 1 (poorly) to 5 (extremely well); higher scores indicate greater relationship satisfaction; range = 1-5; higher scores indicate a more favorable outcome. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=214 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=251 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=214 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Relationship Satisfaction	4.22 score on a scale Standard Error 0.06	4.21 score on a scale Standard Error 0.05	4.29 score on a scale Standard Error 0.06

PRIMARY outcome

Timeframe: 6-month follow-up

Population: Question only asked of participants in a relationship.

Relationship satisfaction will be assessed using 7-items (e.g., "How well does your partner meet your needs?") rated on a 5-point Likert-type scale from 1 (poorly) to 5 (extremely well); higher scores indicate greater relationship satisfaction; range = 1-5; higher scores indicate a more favorable outcome. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=201 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=233 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=194 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Relationship Satisfaction	4.17 score on a scale Standard Error .07	4.23 score on a scale Standard Error .06	4.25 score on a scale Standard Error 0.08

PRIMARY outcome

Timeframe: 12-month follow-up

Population: Question only asked of participants in a relationship.

Relationship satisfaction will be assessed using 7-items (e.g., "How well does your partner meet your needs?") rated on a 5-point Likert-type scale from 1 (poorly) to 5 (extremely well); higher scores indicate greater relationship satisfaction; range = 1-5; higher scores indicate a more favorable outcome. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=205 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=225 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=201 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Relationship Satisfaction	4.22 score on a scale Standard Error 0.09	4.25 score on a scale Standard Error 0.07	4.22 score on a scale Standard Error 0.10

PRIMARY outcome

Timeframe: posttest (4-weeks after pretest)

Population: Only asked of participants in a relationship. This analysis was conducted using multiple imputed data. Therefore, the percentage values will not yield a whole participant because results are pooled between multiple imputations.

10-items (e.g., "I spoke to my partner in a hostile or mean tone of voice."); Participants were asked to rate how often these things happened with their current or ex-dating partner on a 4-point Likert-type scale from 1 (never) to 4 (often); higher scores indicate more frequent relationship violence; range = 1-4. \[Given lack of variability, this measure was dichotomized so 0 equals no violence and 1 equals any violence.\]

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=214 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=251 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=214 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants With Relationship Violence Perpetration	39 percentage of participants	38 percentage of participants	38 percentage of participants

PRIMARY outcome

Timeframe: 6-month follow-up

Population: Asked of participants in a relationship. This analysis was conducted using multiple imputed data. Therefore, the percentage values will not yield a whole participant because results are pooled between multiple imputations.

10-items (e.g., "I spoke to my partner in a hostile or mean tone of voice."); Participants were asked to rate how often these things happened with their current or ex-dating partner on a 4-point Likert-type scale from 1 (never) to 4 (often); higher scores indicate more frequent relationship violence; range = 1-4. \[Given lack of variability, this measure was dichotomized so 0 equals no violence and 1 equals any violence.\]

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=201 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=233 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=194 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants With Relationship Violence Perpetration	43 percentage of participants	40 percentage of participants	37 percentage of participants

PRIMARY outcome

Timeframe: 12-month follow-up

Population: Asked of participants in a relationship.

10-items (e.g., "I spoke to my partner in a hostile or mean tone of voice."); Participants were asked to rate how often these things happened with their current or ex-dating partner on a 4-point Likert-type scale from 1 (never) to 4 (often); higher scores indicate more frequent relationship violence; range = 1-4. \[Given lack of variability, this measure was dichotomized so 0 equals no violence and 1 equals any violence.\]

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=205 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=225 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=201 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants With Relationship Violence Perpetration	43 percentage of participants	45 percentage of participants	41 percentage of participants

PRIMARY outcome

Timeframe: posttest (4-weeks after pretest)

Population: Asked of participants in a relationship. This analysis was conducted using multiple imputed data. Therefore, the percentage values will not yield a whole participant because results are pooled between multiple imputations.

10-items (e.g., "My partner spoke to me in a hostile or mean tone of voice"); Participants were asked to rate how often these things happened with their current or ex-dating partner on a 4-point Likert-type scale from 1 (never) to 4 (often); higher scores indicate more frequent relationship violence; range = 1-4; \[Given lack of variability, this measure was dichotomized so 0 equals no violence and 1 equals any violence.\]

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=214 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=251 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=214 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants With Relationship Violence Victimization	38 percentage of participants	38 percentage of participants	36 percentage of participants

PRIMARY outcome

Timeframe: 6-month follow-up

Population: Asked of participants in a relationship. This analysis was conducted using multiple imputed data. Therefore, the percentage values will not yield a whole participant because results are pooled between multiple imputations.

10-items (e.g., "My partner spoke to me in a hostile or mean tone of voice"); Participants were asked to rate how often these things happened with their current or ex-dating partner on a 4-point Likert-type scale from 1 (never) to 4 (often); higher scores indicate more frequent relationship violence; range = 1-4; \[Given lack of variability, this measure was dichotomized so 0 equals no violence and 1 equals any violence.\]

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=201 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=233 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=194 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants With Relationship Violence Victimization	41 percentage of participants	36 percentage of participants	39 percentage of participants

PRIMARY outcome

Timeframe: 12-month follow-up

Population: Asked of participants in a relationship. This analysis was conducted using multiple imputed data. Therefore, the percentage values will not yield a whole participant because results are pooled between multiple imputations.

10-items (e.g., "My partner spoke to me in a hostile or mean tone of voice"); Participants were asked to rate how often these things happened with their current or ex-dating partner on a 4-point Likert-type scale from 1 (never) to 4 (often); higher scores indicate more frequent relationship violence; range = 1-4; \[Given lack of variability, this measure was dichotomized so 0 equals no violence and 1 equals any violence.\]

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=205 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=225 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=201 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants With Relationship Violence Victimization	45 percentage of participants	46 percentage of participants	39 percentage of participants

PRIMARY outcome

Timeframe: posttest (4-weeks after pretest)

Population: Only participants who indicated they had had sex responded to these items.

4-items (e.g., How many times have you had oral, vaginal, or anal sex with a casual partner?); Participants were asked to report how many times each behavior happened; higher scores indicate greater sexual risk taking. Responses were open-ended so while the lower limit of the range was assumed to be zero, there was no upper limit imposed on participants.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=318 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=375 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=344 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Risky Sexual Behaviors	0.36 score on a scale Standard Error 0.03	0.29 score on a scale Standard Error 0.02	0.33 score on a scale Standard Error 0.03

PRIMARY outcome

Timeframe: 6-month follow-up

Population: Only participants who indicated they had had sex responded to these items.

4-items (e.g., How many times have you had oral, vaginal, or anal sex with a casual partner?); Participants were asked to report how many times each behavior happened; higher scores indicate greater sexual risk taking. Responses were open-ended so while the lower limit of the range was assumed to be zero, there was no upper limit imposed on participants.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=318 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=375 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=344 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Risky Sexual Behaviors	0.41 score on a scale Standard Error 0.02	0.40 score on a scale Standard Error 0.02	0.41 score on a scale Standard Error 0.02

PRIMARY outcome

Timeframe: 12-month follow-up

Population: Only participants who indicated they had had sex responded to these items.

4-items (e.g., How many times have you had oral, vaginal, or anal sex with a casual partner?); Participants were asked to report how many times each behavior happened; higher scores indicate greater sexual risk taking. Responses were open-ended so while the lower limit of the range was assumed to be zero, there was no upper limit imposed on participants.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=318 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=375 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=344 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Risky Sexual Behaviors	0.45 score on a scale Standard Error 0.02	0.42 score on a scale Standard Error 0.02	0.43 score on a scale Standard Error 0.02

PRIMARY outcome

Timeframe: posttest (4-weeks after pretest)

Population: Participants who had sex responded to this item. This analysis was conducted using multiple imputed data - the percentage values will not yield a whole participant because results are pooled between multiple imputations.

1-item ("Did you use a condom and/or dental dam the last time you had oral sex?"); participants answered "yes" (1) or "no" (0); Only participants who indicated they had had oral sex responded to this item

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=269 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=341 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=297 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants That Used Protection at Last Oral Sex	19 percentage of participants	17 percentage of participants	17 percentage of participants

PRIMARY outcome

Timeframe: 6-month follow-up

Population: Participants who had sex responded to this item. This analysis was conducted using multiple imputed data - the percentage values will not yield a whole participant because results are pooled between multiple imputations.

1-item ("Did you use a condom and/or dental dam the last time you had oral sex?"); participants answered "yes" (1) or "no" (0); Only participants who indicated they had had oral sex responded to this item

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=269 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=341 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=297 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants That Used Protection at Last Oral Sex	27 percentage of participants	19 percentage of participants	26 percentage of participants

PRIMARY outcome

Timeframe: 12-month follow-up

Population: Participants who had sex responded to this item. This analysis was conducted using multiple imputed data - the percentage values will not yield a whole participant because results are pooled between multiple imputations.

1-item ("Did you use a condom and/or dental dam the last time you had oral sex?"); participants answered "yes" (1) or "no" (0); Only participants who indicated they had had oral sex responded to this item

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=269 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=341 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=297 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants That Used Protection at Last Oral Sex	26 percentage of participants	20 percentage of participants	21 percentage of participants

PRIMARY outcome

Timeframe: posttest (4-weeks after pretest)

Population: Only participants who indicated they had had sex responded to these items.

3-items used to calculate change in frequency of use of protection during oral sex \[e.g., "In the past month, how often did you or your partner(s) use a condom or dental dam when having oral sex?"\]; items rated on a 4-point Likert-type scale from 1 (never) to 4 (always) and averaged for analyses; higher scores indicate more frequent use of protection; Only participants who indicated they had had oral sex responded to these items.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=269 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=341 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=297 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Frequency of Use of Protection During Oral Sex	1.73 score on a scale Standard Error 0.09	1.63 score on a scale Standard Error 0.07	1.75 score on a scale Standard Error 0.08

PRIMARY outcome

Timeframe: 6-month follow-up

Population: Only participants who indicated they had had sex responded to these items.

3-items used to calculate change in frequency of use of protection during oral sex \[e.g., "In the past month, how often did you or your partner(s) use a condom or dental dam when having oral sex?"\]; items rated on a 4-point Likert-type scale from 1 (never) to 4 (always) and averaged for analyses; higher scores indicate more frequent use of protection; Only participants who indicated they had had oral sex responded to these items.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=269 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=341 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=297 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Frequency of Use of Protection During Oral Sex	1.82 score on a scale Standard Error 0.09	1.76 score on a scale Standard Error 0.07	1.79 score on a scale Standard Error 0.08

PRIMARY outcome

Timeframe: 12-month follow-up

Population: Only participants who indicated they had had sex responded to these items.

3-items used to calculate change in frequency of use of protection during oral sex \[e.g., "In the past month, how often did you or your partner(s) use a condom or dental dam when having oral sex?"\]; items rated on a 4-point Likert-type scale from 1 (never) to 4 (always) and averaged for analyses; higher scores indicate more frequent use of protection; Only participants who indicated they had had oral sex responded to these items.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=269 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=341 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=297 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Frequency of Use of Protection During Oral Sex	1.71 score on a scale Standard Error 0.09	1.76 score on a scale Standard Error 0.08	1.89 score on a scale Standard Error 0.09

PRIMARY outcome

Timeframe: posttest (4-weeks after pretest)

Population: Only participants who indicated they had had sex responded to these items.

3-items used to calculate change in frequency of condom use during vaginal sex \[e.g., "In the past month, how often did you or your partner(s) use a condom when having vaginal sex?"\]; items rated on a 4-point Likert-type scale from 1 (never) to 4 (always) and averaged for analyses; higher scores indicate more frequent condom use; Only participants who indicated they had had vaginal sex responded to these items.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=248 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=306 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=287 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Frequency of Condom Use During Vaginal Sex	2.5 score on a scale Standard Error 0.11	2.43 score on a scale Standard Error 0.08	2.61 score on a scale Standard Error 0.10

PRIMARY outcome

Timeframe: 6-month follow-up

Population: Only participants who indicated they had had sex responded to these items.

3-items used to calculate change in frequency of condom use during vaginal sex \[e.g., "In the past month, how often did you or your partner(s) use a condom when having vaginal sex?"\]; items rated on a 4-point Likert-type scale from 1 (never) to 4 (always) and averaged for analyses; higher scores indicate more frequent condom use; Only participants who indicated they had had vaginal sex responded to these items.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=248 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=306 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=287 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Frequency of Condom Use During Vaginal Sex	2.81 score on a scale Standard Error 0.08	2.75 score on a scale Standard Error 0.07	2.83 score on a scale Standard Error 0.08

PRIMARY outcome

Timeframe: 12-month follow-up

Population: Only participants who indicated they had had sex responded to these items.

3-items used to calculate change in frequency of condom use during vaginal sex \[e.g., "In the past month, how often did you or your partner(s) use a condom when having vaginal sex?"\]; items rated on a 4-point Likert-type scale from 1 (never) to 4 (always) and averaged for analyses; higher scores indicate more frequent condom use; Only participants who indicated they had had vaginal sex responded to these items.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=248 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=306 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=287 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Frequency of Condom Use During Vaginal Sex	2.70 score on a scale Standard Error 0.10	2.79 score on a scale Standard Error 0.09	2.71 score on a scale Standard Error 0.08

PRIMARY outcome

Timeframe: posttest (4-weeks after pretest)

Population: Only participants who indicated they had had sex responded to these items.

3-items used to calculate change in frequency of birth control use \[e.g., "In the past month, how often did you or your partner(s) use one of the following forms of birth control? Birth control pills, The Shot (DepoProvera), The Patch, The Ring (Nuvaring), IUD (Mirena, Paragard, Skyla), The Implant (Implanon, Nexplanon), or other FDA approved methods."\]; items rated on a 4-point Likert-type scale from 1 (never) to 4 (always) and averaged for analyses; higher scores indicate more frequent birth control use; Only participants who indicated they had had vaginal sex responded to these items.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=248 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=306 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=287 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Frequency of Birth Control Use	2.48 score on a scale Standard Error 0.10	2.47 score on a scale Standard Error 0.09	2.55 score on a scale Standard Error 0.11

PRIMARY outcome

Timeframe: 6-month follow-up

Population: Only participants who indicated they had had sex responded to these items.

3-items used to calculate change in frequency of birth control use \[e.g., "In the past month, how often did you or your partner(s) use one of the following forms of birth control? Birth control pills, The Shot (DepoProvera), The Patch, The Ring (Nuvaring), IUD (Mirena, Paragard, Skyla), The Implant (Implanon, Nexplanon), or other FDA approved methods."\]; items rated on a 4-point Likert-type scale from 1 (never) to 4 (always) and averaged for analyses; higher scores indicate more frequent birth control use; Only participants who indicated they had had vaginal sex responded to these items.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=248 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=306 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=287 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Frequency of Birth Control Use	2.56 score on a scale Standard Error 0.11	2.81 score on a scale Standard Error 0.09	2.87 score on a scale Standard Error 0.10

PRIMARY outcome

Timeframe: 12-month follow-up

Population: Only participants who indicated they had had sex responded to these items.

3-items used to calculate change in frequency of birth control use \[e.g., "In the past month, how often did you or your partner(s) use one of the following forms of birth control? Birth control pills, The Shot (DepoProvera), The Patch, The Ring (Nuvaring), IUD (Mirena, Paragard, Skyla), The Implant (Implanon, Nexplanon), or other FDA approved methods."\]; items rated on a 4-point Likert-type scale from 1 (never) to 4 (always) and averaged for analyses; higher scores indicate more frequent birth control use; Only participants who indicated they had had vaginal sex responded to these items.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=248 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=306 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=287 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Frequency of Birth Control Use	2.67 score on a scale Standard Error 0.12	2.83 score on a scale Standard Error 0.09	2.71 score on a scale Standard Error 0.11

PRIMARY outcome

Timeframe: posttest (4-weeks after pretest)

Population: Participants who had sex responded to this item. Analysis was conducted using multiple imputed data- the percentage values will not yield a whole participant because results are pooled between multiple imputations.

1-item ("Did you use any contraceptive method the last time you had vaginal sex?"); participants answered "yes" (1) or "no" (0); Only participants who indicated they had had vaginal sex responded to this item

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=248 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=306 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=287 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants That Used Contraceptive at Last Vaginal Sex	57 percentage of participants	62 percentage of participants	64 percentage of participants

PRIMARY outcome

Timeframe: 6-month follow-up

Population: Participants who had sex responded to this item. Analysis was conducted using multiple imputed data- the percentage values will not yield a whole participant because results are pooled between multiple imputations.

1-item ("Did you use any contraceptive method the last time you had vaginal sex?"); participants answered "yes" (1) or "no" (0); Only participants who indicated they had had vaginal sex responded to this item

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=248 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=306 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=287 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants That Used Contraceptives at Last Vaginal Sex	51 percentage of participants	62 percentage of participants	62 percentage of participants

PRIMARY outcome

Timeframe: 12-month follow-up

Population: Participants who had sex responded to this item. Analysis was conducted using multiple imputed data- the percentage values will not yield a whole participant because results are pooled between multiple imputations.

1-item ("Did you use any contraceptive method the last time you had vaginal sex?"); participants answered "yes" (1) or "no" (0); Only participants who indicated they had had vaginal sex responded to this item

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=248 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=306 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=287 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants That Used Contraceptives at Last Vaginal Sex	54 percentage of participants	63 percentage of participants	62 percentage of participants

PRIMARY outcome

Timeframe: posttest (4-weeks after pretest)

Population: Only participants who indicated they had had anal sex responded to these items.

3-items used to calculate change in frequency of condom use during anal sex \[e.g., "In the past month, how often did you or your partner(s) use a condom when having anal sex?"\]; items rated on a 4-point Likert-type scale from 1 (never) to 4 (always) and averaged for analyses; higher scores indicate more frequent condom use; Only participants who indicated they had had anal sex responded to these items.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=75 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=86 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=83 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Frequency of Condom Use During Anal Sex	2.33 score on a scale Standard Error 0.24	1.94 score on a scale Standard Error 0.18	2.59 score on a scale Standard Error 0.25

PRIMARY outcome

Timeframe: 6-month follow-up

Population: Only participants who indicated they had had anal sex responded to these items.

3-items used to calculate change in frequency of condom use during anal sex \[e.g., "In the past month, how often did you or your partner(s) use a condom when having anal sex?"\]; items rated on a 4-point Likert-type scale from 1 (never) to 4 (always) and averaged for analyses; higher scores indicate more frequent condom use; Only participants who indicated they had had anal sex responded to these items.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=75 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=86 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=83 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Frequency of Condom Use During Anal Sex	2.59 score on a scale Standard Error 0.25	2.35 score on a scale Standard Error 0.22	2.47 score on a scale Standard Error 0.19

PRIMARY outcome

Timeframe: 12-month follow-up

Population: Only participants who indicated they had had anal sex responded to these items.

3-items used to calculate change in frequency of condom use during anal sex \[e.g., "In the past month, how often did you or your partner(s) use a condom when having anal sex?"\]; items rated on a 4-point Likert-type scale from 1 (never) to 4 (always) and averaged for analyses; higher scores indicate more frequent condom use; Only participants who indicated they had had anal sex responded to these items.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=75 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=86 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=83 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Frequency of Condom Use During Anal Sex	2.41 score on a scale Standard Error 0.24	2.46 score on a scale Standard Error 0.20	2.58 score on a scale Standard Error 0.21

PRIMARY outcome

Timeframe: posttest (4-weeks after pretest)

Population: Participants who had anal sex responded to this item. Analysis was conducted using multiple imputed data - percentage values will not yield a whole participant because results are pooled between multiple imputations.

1-item ("Did you use a condom during your last anal intercourse?"); participants answered "yes" (1) or "no" (0); Only participants who indicated they had had anal sex responded to this item

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=75 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=86 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=83 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants That Used a Condom at Last Anal Sex	53 percentage of participants	39 percentage of participants	44 percentage of participants

PRIMARY outcome

Timeframe: 6-month follow-up

Population: Participants who had sex responded to this item. Analysis was conducted using multiple imputed data - percentage values will not yield a whole participant because results are pooled between multiple imputations.

1-item ("Did you use a condom during your last anal intercourse?"); participants answered "yes" (1) or "no" (0); Only participants who indicated they had had anal sex responded to this item

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=75 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=86 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=83 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants That Used a Condom at Last Anal Sex	47 percentage of participants	38 percentage of participants	39 percentage of participants

PRIMARY outcome

Timeframe: 12-month follow-up

Population: Participants who had sex responded to this item. Analysis was conducted using multiple imputed data - percentage values will not yield a whole participant because results are pooled between multiple imputations.

1-item ("Did you use a condom during your last anal intercourse?"); participants answered "yes" (1) or "no" (0); Only participants who indicated they had had anal sex responded to this item

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=75 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=86 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=83 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants That Used a Condom at Last Anal Sex	47 percentage of participants	42 percentage of participants	43 percentage of participants

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

6-items (e.g., "People my age in the media…have sexual contact as often as average people my age"; rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate participants think media is more realistic, indicating a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Perceived Realism of Media Messages	2.18 score on a scale Standard Error 0.03	2.30 score on a scale Standard Error 0.03	2.43 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 6-month follow-up

6-items (e.g., "People my age in the media…have sexual contact as often as average people my age"; rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate participants think media is more realistic, indicating a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Perceived Realism of Media Messages	2.27 score on a scale Standard Error 0.04	2.32 score on a scale Standard Error 0.04	2.36 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 12-month follow-up

6-items (e.g., "People my age in the media…have sexual contact as often as average people my age"; rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate participants think media is more realistic, indicating a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Perceived Realism of Media Messages	2.20 score on a scale Standard Error 0.04	2.33 score on a scale Standard Error 0.03	2.38 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

7-items (e.g., "The things I do in my life are similar to what I see in the media"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater perceived similarity, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Perceived Similarity to Media Messages	2.04 score on a scale Standard Error 0.03	2.09 score on a scale Standard Error 0.02	2.17 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: 6-month follow-up

7-items (e.g., "The things I do in my life are similar to what I see in the media"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater perceived similarity, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Perceived Similarity to Media Messages	2.10 score on a scale Standard Error 0.03	2.11 score on a scale Standard Error 0.03	2.15 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 12-month follow-up

7-items (e.g., "The things I do in my life are similar to what I see in the media"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater perceived similarity, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Perceived Similarity to Media Messages	2.05 score on a scale Standard Error 0.03	2.09 score on a scale Standard Error 0.03	2.16 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

3-items (e.g., "I want to do the things that people my age in the media do"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate participants identify more with media, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Identification With Media	2.38 score on a scale Standard Error 0.04	2.41 score on a scale Standard Error 0.03	2.40 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 6-month follow-up

3-items (e.g., "I want to do the things that people my age in the media do"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate participants identify more with media, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Identification With Media	2.35 score on a scale Standard Error 0.05	2.45 score on a scale Standard Error 0.04	2.38 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: 12-month follow-up

3-items (e.g., "I want to do the things that people my age in the media do"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate participants identify more with media, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Identification With Media	2.41 score on a scale Standard Error 0.05	2.42 score on a scale Standard Error 0.04	2.49 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

6-items (e.g., "The media are dishonest about what happens when people drink alcohol"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate participants have more media skepticism, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Media Skepticism	3.13 score on a scale Standard Error 0.04	3.12 score on a scale Standard Error 0.03	3.02 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 6-month follow-up

6-items (e.g., "The media are dishonest about what happens when people drink alcohol"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate participants have more media skepticism, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Media Skepticism	3.13 score on a scale Standard Error 0.04	3.06 score on a scale Standard Error 0.03	3.00 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 12-month follow-up

6-items (e.g., "The media are dishonest about what happens when people drink alcohol"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate participants have more media skepticism, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Media Skepticism	3.06 score on a scale Standard Error 0.04	3.05 score on a scale Standard Error 0.04	3.04 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

6-items (e.g., "Raising children is primarily a woman's responsibility"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate more traditional gender role norms, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Gender Role Norms	1.52 score on a scale Standard Error 0.03	1.46 score on a scale Standard Error 0.02	1.56 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: 6-month follow-up

6-items (e.g., "Raising children is primarily a woman's responsibility"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate more traditional gender role norms, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Gender Role Norms	1.52 score on a scale Standard Error 0.03	1.49 score on a scale Standard Error 0.03	1.54 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: 12-month follow-up

6-items (e.g., "Raising children is primarily a woman's responsibility"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate more traditional gender role norms, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Gender Role Norms	1.51 score on a scale Standard Error 0.03	1.49 score on a scale Standard Error 0.03	1.55 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

13-items (e.g., "If a girl is raped while she is drunk, she is at least somewhat responsible for letting things get out of hand"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater rape myth acceptance, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Rape Myth Acceptance	1.48 score on a scale Standard Error 0.03	1.46 score on a scale Standard Error 0.02	1.52 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: 6-month follow-up

13-items (e.g., "If a girl is raped while she is drunk, she is at least somewhat responsible for letting things get out of hand"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater rape myth acceptance, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Rape Myth Acceptance	1.48 score on a scale Standard Error 0.03	1.46 score on a scale Standard Error 0.03	1.49 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: 12-month follow-up

13-items (e.g., "If a girl is raped while she is drunk, she is at least somewhat responsible for letting things get out of hand"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater rape myth acceptance, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Rape Myth Acceptance	1.47 score on a scale Standard Error 0.03	1.46 score on a scale Standard Error 0.03	1.48 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

5-items (e.g., "I could talk to a friend who I suspected is in an abusive relationship"); participants rate their confidence that they could do the action on a scale from 0-100; higher scores indicate greater bystander efficacy, which is a more favorable outcome; range = 0-100. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Efficacy to Intervene as Bystander	79.05 score on a scale Standard Error 1.07	79.67 score on a scale Standard Error 0.92	79.52 score on a scale Standard Error 1.30

SECONDARY outcome

Timeframe: 6-month follow-up

5-items (e.g., "I could talk to a friend who I suspected is in an abusive relationship"); participants rate their confidence that they could do the action on a scale from 0-100; higher scores indicate greater bystander efficacy, which is a more favorable outcome; range = 0-100. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Efficacy to Intervene as Bystander	77.23 score on a scale Standard Error 1.22	79.89 score on a scale Standard Error 1.04	77.55 score on a scale Standard Error 1.25

SECONDARY outcome

Timeframe: 12-month follow-up

5-items (e.g., "I could talk to a friend who I suspected is in an abusive relationship"); participants rate their confidence that they could do the action on a scale from 0-100; higher scores indicate greater bystander efficacy, which is a more favorable outcome; range = 0-100. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Efficacy to Intervene as Bystander	76.76 score on a scale Standard Error 1.26	79.06 score on a scale Standard Error 1.13	78.01 score on a scale Standard Error 1.28

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

4-items (e.g., "Approach a friend if I thought they were in an abusive relationship and let them know that I am here to help"); rated on a 4-point Likert-type scale from 1 (not at all likely) to 4 (extremely likely); higher scores indicate greater intentions to intervene as a bystander, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Intent to Intervene as Bystander	3.31 score on a scale Standard Error 0.03	3.36 score on a scale Standard Error 0.03	3.30 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: 6-month follow-up

4-items (e.g., "Approach a friend if I thought they were in an abusive relationship and let them know that I am here to help"); rated on a 4-point Likert-type scale from 1 (not at all likely) to 4 (extremely likely); higher scores indicate greater intentions to intervene as a bystander, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Intent to Intervene as Bystander	3.33 score on a scale Standard Error 0.03	3.33 score on a scale Standard Error 0.03	3.30 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: 12-month follow-up

4-items (e.g., "Approach a friend if I thought they were in an abusive relationship and let them know that I am here to help"); rated on a 4-point Likert-type scale from 1 (not at all likely) to 4 (extremely likely); higher scores indicate greater intentions to intervene as a bystander, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Intent to Intervene as Bystander	3.33 score on a scale Standard Error 0.03	3.40 score on a scale Standard Error 0.03	3.29 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

23-items (e.g., "True or False: You can tell if someone has an STI by looking at him/her"); For each item, participants who answer correctly will receive a "1" and participants who answer incorrectly will receive a "0"; items will be summed; higher scores indicate greater sexual health knowledge; range = 0-23 The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Sexual Health Knowledge	17.53 score on a scale Standard Error 0.18	17.29 score on a scale Standard Error 0.16	17.42 score on a scale Standard Error 0.19

SECONDARY outcome

Timeframe: 6-month follow-up

23-items (e.g., "True or False: You can tell if someone has an STI by looking at him/her"); For each item, participants who answer correctly will receive a "1" and participants who answer incorrectly will receive a "0"; items will be summed; higher scores indicate greater sexual health knowledge; range = 0-23. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Sexual Health Knowledge	17.36 score on a scale Standard Error 0.18	17.48 score on a scale Standard Error 0.15	17.61 score on a scale Standard Error 0.20

SECONDARY outcome

Timeframe: 12-month follow-up

23-items (e.g., "True or False: You can tell if someone has an STI by looking at him/her"); For each item, participants who answer correctly will receive a "1" and participants who answer incorrectly will receive a "0"; items will be summed; higher scores indicate greater sexual health knowledge; range = 0-23. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Sexual Health Knowledge	17.48 score on a scale Standard Error 0.19	17.53 score on a scale Standard Error 0.16	17.74 score on a scale Standard Error 0.20

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

5-items (e.g., "It is okay to…have sex with someone who has had many sexual partners"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate positive attitudes towards risky sexual behaviors, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Attitudes Toward Risky Sexual Behaviors	2.22 score on a scale Standard Error 0.03	2.32 score on a scale Standard Error 0.03	2.25 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: 6-month follow-up

5-items (e.g., "It is okay to…have sex with someone who has had many sexual partners"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate positive attitudes towards risky sexual behaviors, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Attitudes Toward Risky Sexual Behaviors	2.24 score on a scale Standard Error .03	2.30 score on a scale Standard Error 0.03	2.28 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 12-month follow-up

5-items (e.g., "It is okay to…have sex with someone who has had many sexual partners"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate positive attitudes towards risky sexual behaviors, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Attitudes Toward Risky Sexual Behaviors	2.26 score on a scale Standard Error 0.04	2.25 score on a scale Standard Error 0.03	2.20 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

1-item \["It is okay to…have unprotected sex (not including when people are trying to get pregnant)"\]; rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate positive attitudes towards unprotected sex; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Attitudes Toward Unprotected Sex	1.96 score on a scale Standard Error 0.05	2.07 score on a scale Standard Error 0.05	2.04 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: 6-month follow-up

1-item \["It is okay to…have unprotected sex (not including when people are trying to get pregnant)"\]; rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate positive attitudes towards unprotected sex; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Attitudes Toward Unprotected Sex	1.98 score on a scale Standard Error 0.06	2.06 score on a scale Standard Error 0.05	1.98 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: 12-month follow-up

1-item \["It is okay to…have unprotected sex (not including when people are trying to get pregnant)"\]; rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate positive attitudes towards unprotected sex; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Attitudes Toward Unprotected Sex	2.05 score on a scale Standard Error 0.06	2.06 score on a scale Standard Error 0.05	2.12 score on a scale Standard Error 0.06

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

9-items (e.g., "It is wrong to use birth control"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate more favorable attitudes towards contraception; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Attitudes Toward Contraception/Protection	3.44 score on a scale Standard Error 0.03	3.47 score on a scale Standard Error 0.02	3.42 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: 6-month follow-up

9-items (e.g., "It is wrong to use birth control"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate more favorable attitudes towards contraception; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Attitudes Toward Contraception/Protection	3.46 score on a scale Standard Error 0.03	3.46 score on a scale Standard Error 0.03	3.37 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: 12-month follow-up

9-items (e.g., "It is wrong to use birth control"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate more favorable attitudes towards contraception; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Attitudes Toward Contraception/Protection	3.45 score on a scale Standard Error 0.04	3.42 score on a scale Standard Error 0.03	3.37 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

4-items (e.g., "Before deciding to have sex, people should…talk with their partner about HIV/AIDS and other STIs"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate positive attitudes towards communication, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Attitudes Toward Communication With Partners and Medical Professionals	3.45 score on a scale Standard Error 0.04	3.47 score on a scale Standard Error 0.03	3.47 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: 6-month follow-up

4-items (e.g., "Before deciding to have sex, people should…talk with their partner about HIV/AIDS and other STIs"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate positive attitudes towards communication, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Attitudes Toward Communication With Partners and Medical Professionals	3.48 score on a scale Standard Error 0.03	3.50 score on a scale Standard Error 0.03	3.46 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 12-month follow-up

4-items (e.g., "Before deciding to have sex, people should…talk with their partner about HIV/AIDS and other STIs"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate positive attitudes towards communication, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Attitudes Toward Communication With Partners and Medical Professionals	3.44 score on a scale Standard Error 0.03	3.48 score on a scale Standard Error 0.03	3.36 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

1-item (e.g., "What percentage of people your age have had unprotected sex?"); participants write in their estimate of what percentage of their peers are engaging in the behavior; higher scores indicate participants think more of their peers are engaging in unprotected sex; range = 0-100. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Descriptive Norms of Unprotected Sex	46.97 score on a scale Standard Error 1.40	52.95 score on a scale Standard Error 1.23	50.56 score on a scale Standard Error 1.54

SECONDARY outcome

Timeframe: 6-month follow-up

1-item (e.g., "What percentage of people your age have had unprotected sex?"); participants write in their estimate of what percentage of their peers are engaging in the behavior; higher scores indicate participants think more of their peers are engaging in unprotected sex; range = 0-100. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Descriptive Norms of Unprotected Sex	48.81 score on a scale Standard Error 1.46	53.90 score on a scale Standard Error 1.28	52.48 score on a scale Standard Error 1.52

SECONDARY outcome

Timeframe: 12-month follow-up

1-item (e.g., "What percentage of people your age have had unprotected sex?"); participants write in their estimate of what percentage of their peers are engaging in the behavior; higher scores indicate participants think more of their peers are engaging in unprotected sex; range = 0-100. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Descriptive Norms of Unprotected Sex	50.45 score on a scale Standard Error 1.54	54.28 score on a scale Standard Error 1.32	54.40 score on a scale Standard Error 1.57

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

5-items (e.g., "What percentage of people your age…have had oral, anal, or vaginal sex with someone who has not been tested for STIs or whose STI status is unknown?"); participants write in their estimate of what percentage of their peers are engaging in each behavior; higher scores indicate participants think more of their peers are engaging in risky contraception use/protection practices; range = 0-100. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Descriptive Norms of Risky Sexual Activity	44.21 score on a scale Standard Error 1.15	49.26 score on a scale Standard Error 0.97	48.00 score on a scale Standard Error 1.23

SECONDARY outcome

Timeframe: 6-month follow-up

5-items (e.g., "What percentage of people your age…have had oral, anal, or vaginal sex with someone who has not been tested for STIs or whose STI status is unknown?"); participants write in their estimate of what percentage of their peers are engaging in each behavior; higher scores indicate participants think more of their peers are engaging in risky contraception use/protection practices; range = 0-100. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Descriptive Norms of Risky Sexual Activity	46.70 score on a scale Standard Error 1.10	50.37 score on a scale Standard Error 0.97	49.80 score on a scale Standard Error 1.27

SECONDARY outcome

Timeframe: 12-month follow-up

5-items (e.g., "What percentage of people your age…have had oral, anal, or vaginal sex with someone who has not been tested for STIs or whose STI status is unknown?"); participants write in their estimate of what percentage of their peers are engaging in each behavior; higher scores indicate participants think more of their peers are engaging in risky contraception use/protection practices; range = 0-100. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Descriptive Norms of Risky Sexual Activity	45.33 score on a scale Standard Error 1.29	49.11 score on a scale Standard Error 1.14	49.08 score on a scale Standard Error 1.31

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

5-items (e.g., "I can easily say 'no' to someone who is pressuring me to have sex"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater sex refusal self-efficacy, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Sex Refusal Self-efficacy	3.19 score on a scale Standard Error 0.03	3.14 score on a scale Standard Error 0.03	3.16 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: 6-month follow-up

5-items (e.g., "I can easily say 'no' to someone who is pressuring me to have sex"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater sex refusal self-efficacy, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Sex Refusal Self-efficacy	3.17 score on a scale Standard Error 0.04	3.20 score on a scale Standard Error 0.04	3.13 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 12-month follow-up

5-items (e.g., "I can easily say 'no' to someone who is pressuring me to have sex"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater sex refusal self-efficacy, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Sex Refusal Self-efficacy	3.18 score on a scale Standard Error 0.04	3.20 score on a scale Standard Error 0.03	3.20 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

1-item ("I can easily say 'no' to sex if we do not have protection even if I really want to have sex with that person"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater self-efficacy to refuse unprotected sex, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Self-efficacy to Refuse Unprotected Sex	3.19 score on a scale Standard Error 0.03	3.14 score on a scale Standard Error 0.03	3.26 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 6-month follow-up

1-item ("I can easily say 'no' to sex if we do not have protection even if I really want to have sex with that person"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater self-efficacy to refuse unprotected sex, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Self-efficacy to Refuse Unprotected Sex	3.17 score on a scale Standard Error 0.04	3.20 score on a scale Standard Error 0.04	3.17 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: 12-month follow-up

1-item ("I can easily say 'no' to sex if we do not have protection even if I really want to have sex with that person"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater self-efficacy to refuse unprotected sex, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Self-efficacy to Refuse Unprotected Sex	3.18 score on a scale Standard Error 0.04	3.20 score on a scale Standard Error 0.03	3.29 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

1-item (e.g., "I can use a condom correctly or explain to my partner how to use a condom correctly"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater self-efficacy to use a condom, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Self-efficacy to Use a Condom	3.28 score on a scale Standard Error 0.05	3.23 score on a scale Standard Error 0.04	3.27 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 6-month follow-up

1-item (e.g., "I can use a condom correctly or explain to my partner how to use a condom correctly"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater self-efficacy to use a condom, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Self-efficacy to Use a Condom	3.27 score on a scale Standard Error 0.05	3.25 score on a scale Standard Error 0.04	3.27 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: 12-month follow-up

1-item (e.g., "I can use a condom correctly or explain to my partner how to use a condom correctly"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater self-efficacy to use a condom, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Self-efficacy to Use a Condom	3.29 score on a scale Standard Error 0.04	3.32 score on a scale Standard Error 0.04	3.23 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

4-items (e.g., "I can discuss preventing STIs with my partner"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater self-efficacy to communicate, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Self-efficacy to Communicate With Partners and Medical Professionals About Sex	3.35 score on a scale Standard Error 0.03	3.35 score on a scale Standard Error 0.03	3.35 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: 6-month follow-up

4-items (e.g., "I can discuss preventing STIs with my partner"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater self-efficacy to communicate, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Self-efficacy to Communicate With Partners and Medical Professionals About Sex	3.35 score on a scale Standard Error 0.03	3.34 score on a scale Standard Error 0.03	3.32 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: 12-month follow-up

4-items (e.g., "I can discuss preventing STIs with my partner"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater self-efficacy to communicate, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Self-efficacy to Communicate With Partners and Medical Professionals About Sex	3.36 score on a scale Standard Error 0.03	3.42 score on a scale Standard Error 0.03	3.34 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

5-items (e.g., "In the next 6 months, how likely is it that you will have oral, anal, or vaginal sex with a casual partner"); rated on a 4-point Likert-type scale from 1 (not at all likely) to 4 (extremely likely); higher scores indicate greater intentions to engage in risky sexual behaviors, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Risky Sexual Behavior Intentions	1.79 score on a scale Standard Error 0.03	1.80 score on a scale Standard Error 0.03	1.79 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 6-month follow-up

5-items (e.g., "In the next 6 months, how likely is it that you will have oral, anal, or vaginal sex with a casual partner"); rated on a 4-point Likert-type scale from 1 (not at all likely) to 4 (extremely likely); higher scores indicate greater intentions to engage in risky sexual behaviors, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Risky Sexual Behavior Intentions	1.79 score on a scale Standard Error 0.04	1.80 score on a scale Standard Error 0.04	1.86 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 12-month follow-up

5-items (e.g., "In the next 6 months, how likely is it that you will have oral, anal, or vaginal sex with a casual partner"); rated on a 4-point Likert-type scale from 1 (not at all likely) to 4 (extremely likely); higher scores indicate greater intentions to engage in risky sexual behaviors, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Risky Sexual Behavior Intentions	1.78 score on a scale Standard Error 0.04	1.82 score on a scale Standard Error 0.04	1.90 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

1-item ("In the next 6 months, how likely is it that you will…have unprotected sex?"); rated on a 4-point Likert-type scale from 1 (not at all likely) to 4 (extremely likely); higher scores indicate greater intentions to have unprotected sex, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Intentions to Have Unprotected Sex	1.88 score on a scale Standard Error 0.05	1.96 score on a scale Standard Error 0.04	1.91 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: 6-month follow-up

1-item ("In the next 6 months, how likely is it that you will…have unprotected sex?"); rated on a 4-point Likert-type scale from 1 (not at all likely) to 4 (extremely likely); higher scores indicate greater intentions to have unprotected sex, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Intentions to Have Unprotected Sex	1.92 score on a scale Standard Error 0.05	2.03 score on a scale Standard Error 0.05	1.96 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: 12-month follow-up

1-item ("In the next 6 months, how likely is it that you will…have unprotected sex?"); rated on a 4-point Likert-type scale from 1 (not at all likely) to 4 (extremely likely); higher scores indicate greater intentions to have unprotected sex, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Intentions to Have Unprotected Sex	1.98 score on a scale Standard Error 0.06	1.98 score on a scale Standard Error 0.06	2.08 score on a scale Standard Error 0.06

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

1-item (e.g., "If you were to decide to have sexual intercourse in the next 6 months, how likely would you be to use a condom?"); rated on a 4-point Likert-type scale from 1 (not at all likely) to 4 (extremely likely); higher scores indicate greater intentions to use protection/contraception, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Intentions to Use a Condom	3.22 score on a scale Standard Error 0.05	3.16 score on a scale Standard Error 0.04	3.22 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: 6-month follow-up

1-item (e.g., "If you were to decide to have sexual intercourse in the next 6 months, how likely would you be to use a condom?"); rated on a 4-point Likert-type scale from 1 (not at all likely) to 4 (extremely likely); higher scores indicate greater intentions to use protection/contraception, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Intentions to Use a Condom	3.25 score on a scale Standard Error 0.06	3.10 score on a scale Standard Error 0.05	3.21 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: 12-month follow-up

1-item (e.g., "If you were to decide to have sexual intercourse in the next 6 months, how likely would you be to use a condom?"); rated on a 4-point Likert-type scale from 1 (not at all likely) to 4 (extremely likely); higher scores indicate greater intentions to use protection/contraception, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Intentions to Use a Condom	3.10 score on a scale Standard Error 0.06	3.15 score on a scale Standard Error 0.05	3.07 score on a scale Standard Error 0.06

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

6-items (e.g., "If you were to decide to engage in sexual activity with a new partner in the next 6 months, how likely would you be to…talk with a partner about HIV/AIDS or other STIs?"); rated on a 4-point Likert-type scale from 1 (not at all likely) to 4 (extremely likely); higher scores indicate greater intentions to communicate, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Intentions to Communicate With Partners and Medical Professionals About Sex	3.07 score on a scale Standard Error 0.03	3.09 score on a scale Standard Error 0.03	3.13 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 6-month follow-up

6-items (e.g., "If you were to decide to engage in sexual activity with a new partner in the next 6 months, how likely would you be to…talk with a partner about HIV/AIDS or other STIs?"); rated on a 4-point Likert-type scale from 1 (not at all likely) to 4 (extremely likely); higher scores indicate greater intentions to communicate, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Intentions to Communicate With Partners and Medical Professionals About Sex	3.11 score on a scale Standard Error 0.04	3.06 score on a scale Standard Error 0.04	3.09 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 12-month follow-up

6-items (e.g., "If you were to decide to engage in sexual activity with a new partner in the next 6 months, how likely would you be to…talk with a partner about HIV/AIDS or other STIs?"); rated on a 4-point Likert-type scale from 1 (not at all likely) to 4 (extremely likely); higher scores indicate greater intentions to communicate, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Intentions to Communicate With Partners and Medical Professionals About Sex	3.05 score on a scale Standard Error 0.05	3.13 score on a scale Standard Error 0.04	3.12 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

1-item (e.g., "Suppose you were with your boyfriend/girlfriend/partner. He/she wants to have sex, but neither of you have any form of protection. In this situation, how willing would you be to go ahead and have sex anyway?";); rated on a 4-point Likert-type scale from 1 (very unwilling) to 4 (very willing); higher scores indicate greater willingness to have unprotected sex, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Willingness to Have Unprotected Sex	2.28 score on a scale Standard Error 0.04	2.37 score on a scale Standard Error 0.04	2.24 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: 6-month follow-up

1-item (e.g., "Suppose you were with your boyfriend/girlfriend/partner. He/she wants to have sex, but neither of you have any form of protection. In this situation, how willing would you be to go ahead and have sex anyway?";); rated on a 4-point Likert-type scale from 1 (very unwilling) to 4 (very willing); higher scores indicate greater willingness to have unprotected sex, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Willingness to Have Unprotected Sex	2.24 score on a scale Standard Error 0.05	2.41 score on a scale Standard Error 0.04	2.34 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: 12-month follow-up

1-item (e.g., "Suppose you were with your boyfriend/girlfriend/partner. He/she wants to have sex, but neither of you have any form of protection. In this situation, how willing would you be to go ahead and have sex anyway?";); rated on a 4-point Likert-type scale from 1 (very unwilling) to 4 (very willing); higher scores indicate greater willingness to have unprotected sex, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Willingness to Have Unprotected Sex	2.34 score on a scale Standard Error 0.06	2.38 score on a scale Standard Error 0.05	2.38 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

5-items (e.g., "Suppose you wanted to have sex with someone but you did not know their STI status. In this situation, how willing would you be to have sex anyway?"); rated on a 4-point Likert-type scale from 1 (very unwilling) to 4 (very willing); higher scores indicate greater willingness to engage in risky sexual behaviors, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Willingness to Engage in Risky Sexual Behaviors	1.90 score on a scale Standard Error 0.03	1.94 score on a scale Standard Error 0.03	1.88 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: 6-month follow-up

5-items (e.g., "Suppose you wanted to have sex with someone but you did not know their STI status. In this situation, how willing would you be to have sex anyway?"); rated on a 4-point Likert-type scale from 1 (very unwilling) to 4 (very willing); higher scores indicate greater willingness to engage in risky sexual behaviors, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Willingness to Engage in Risky Sexual Behaviors	1.91 score on a scale Standard Error 0.04	1.95 score on a scale Standard Error 0.03	1.92 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: 12-month follow-up

5-items (e.g., "Suppose you wanted to have sex with someone but you did not know their STI status. In this situation, how willing would you be to have sex anyway?"); rated on a 4-point Likert-type scale from 1 (very unwilling) to 4 (very willing); higher scores indicate greater willingness to engage in risky sexual behaviors, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Willingness to Engage in Risky Sexual Behaviors	1.93 score on a scale Standard Error 0.03	1.90 score on a scale Standard Error 0.03	1.89 score on a scale Standard Error 0.03

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

Population: Only includes participants who provided data for this outcome.

Participants are shown an advertisement and asked to describe it in detail including noting marketing strategies and any missing information (e.g., How are advertisers trying to get someone to buy this product?). Qualitative responses to the questions are coded by trained project staff members once inter-coder reliability is established, and scores represent the extent to which participants identify the implied message of the advertisement. Range: 0-3. Higher scores indicate a more favorable outcome. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=369 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=460 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=354 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Advertisement Deconstruction Skills	1.45 score on a scale Standard Error 0.05	1.36 score on a scale Standard Error 0.05	1.20 score on a scale Standard Error 0.07

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

3-items (e.g., "Most people believe that it is okay for people my age to have unprotected sex"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate riskier injunctive norms, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Injunctive Norms - Most People	2.16 score on a scale Standard Error 0.05	2.16 score on a scale Standard Error 0.04	2.15 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: 6-month follow-up

3-items (e.g., "Most people believe that it is okay for people my age to have unprotected sex"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate riskier injunctive norms, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Injunctive Norms - Most People	2.26 score on a scale Standard Error 0.05	2.25 score on a scale Standard Error 0.04	2.20 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: 12-month follow-up

3-items (e.g., "Most people believe that it is okay for people my age to have unprotected sex"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate riskier injunctive norms, which is a less favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Injunctive Norms - Most People	2.25 score on a scale Standard Error 0.06	2.24 score on a scale Standard Error 0.05	2.27 score on a scale Standard Error 0.06

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

1 item ("My friends think I should use protection when I have sex"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores less risky injunctive norms, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Injunctive Norms - Friends	3.27 score on a scale Standard Error 0.04	3.31 score on a scale Standard Error 0.04	3.35 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 6-month follow-up

1 item ("My friends think I should use protection when I have sex"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores less risky injunctive norms, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Injunctive Norms - Friends	3.30 score on a scale Standard Error 0.06	3.30 score on a scale Standard Error 0.05	3.32 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: 12-month follow-up

1 item ("My friends think I should use protection when I have sex"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores less risky injunctive norms, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Injunctive Norms - Friends	3.29 score on a scale Standard Error 0.05	3.30 score on a scale Standard Error 0.04	3.30 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

1-item ("Most people like me use protection when they have sex"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores less risky descriptive norms, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Descriptive Norms - People Like me	3.15 score on a scale Standard Error 0.04	3.12 score on a scale Standard Error 0.04	3.14 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 6-month follow-up

1-item ("Most people like me use protection when they have sex"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores less risky descriptive norms, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Descriptive Norms - People Like me	3.21 score on a scale Standard Error 0.05	3.13 score on a scale Standard Error 0.04	3.11 score on a scale Standard Error 0.04

SECONDARY outcome

Timeframe: 12-month follow-up

1-item ("Most people like me use protection when they have sex"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores less risky descriptive norms, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Descriptive Norms - People Like me	3.16 score on a scale Standard Error 0.05	3.15 score on a scale Standard Error 0.04	3.14 score on a scale Standard Error 0.05

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

Population: Question only asked of participants who were sexually active.

1 item used to calculate change in frequency of sexual communication with a partner(s) \[e.g., "In the past month, how often did you talk to your partner(s) about using condoms and/or other forms of contraception before engaging in sexual activity?"\]; items rated on a 4-point Likert-type scale from 1 (never) to 4 (always); higher scores indicate more frequent communication, which is a more favorable outcome. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=318 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=375 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=344 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Frequency of Communication With Sexual Partner	2.72 score on a scale Standard Error 0.09	2.81 score on a scale Standard Error 0.08	2.81 score on a scale Standard Error 0.09

SECONDARY outcome

Timeframe: 6-month follow-up

Population: Question only asked of participants who were sexually active.

1 item used to calculate change in frequency of sexual communication with a partner(s) \[e.g., "In the past month, how often did you talk to your partner(s) about using condoms and/or other forms of contraception before engaging in sexual activity?"\]; items rated on a 4-point Likert-type scale from 1 (never) to 4 (always); higher scores indicate more frequent communication, which is a more favorable outcome. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=318 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=375 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=344 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Frequency of Communication With Sexual Partner	3.22 score on a scale Standard Error 0.07	3.13 score on a scale Standard Error 0.06	3.14 score on a scale Standard Error 0.07

SECONDARY outcome

Timeframe: 12-month follow-up

Population: Question only asked of participants who were sexually active.

1 item used to calculate change in frequency of sexual communication with a partner(s) \[e.g., "In the past month, how often did you talk to your partner(s) about using condoms and/or other forms of contraception before engaging in sexual activity?"\]; items rated on a 4-point Likert-type scale from 1 (never) to 4 (always); higher scores indicate more frequent communication, which is a more favorable outcome. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=318 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=375 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=344 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Frequency of Communication With Sexual Partner	3.21 score on a scale Standard Error 0.08	3.17 score on a scale Standard Error 0.07	3.11 score on a scale Standard Error 0.08

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

Population: Analysis was conducted using multiple imputed data - percentage values will not yield a whole participant because results are pooled between multiple imputations.

1-item used to calculate change in whether participants communicated with a doctor about sex \["In the past month, had you talked to a doctor or other medical professional about sex, contraception, and/or relationships?"\]; participants answered "yes" (1) or "no" (0)

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants That Communicated With a Doctor	23 percentage of participants	20 percentage of participants	28 percentage of participants

SECONDARY outcome

Timeframe: 6-month follow-up

Population: Analysis was conducted using multiple imputed data - percentage values will not yield a whole participant because results are pooled between multiple imputations.

1-item used to calculate change in whether participants communicated with a doctor about sex \["In the past month, had you talked to a doctor or other medical professional about sex, contraception, and/or relationships?"\]; participants answered "yes" (1) or "no" (0)

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants That Communicated With a Doctor	51 percentage of participants	55 percentage of participants	53 percentage of participants

SECONDARY outcome

Timeframe: 12-month follow-up

Population: This analysis was conducted using multiple imputed data. Therefore, the percentage values will not yield a whole participant because results are pooled between multiple imputations.

1 item used to calculate change in whether participants communicated with a doctor about sex \["In the past month, had you talked to a doctor or other medical professional about sex, contraception, and/or relationships?"\]; participants answered "yes" (1) or "no" (0)

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Percentage of Participants That Communicated With a Doctor	54 percentage of participants	57 percentage of participants	54 percentage of participants

SECONDARY outcome

Timeframe: posttest (4-weeks after pretest)

1-item (e.g., "I can use a dental dam correctly or explain to my partner how to use a dental dam correctly"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater self-efficacy to use a dental dam, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Self-efficacy to Use a Dental Dam	2.46 score on a scale Standard Error 0.05	2.22 score on a scale Standard Error 0.04	2.40 score on a scale Standard Error 0.07

SECONDARY outcome

Timeframe: 6 month follow-up

1-item (e.g., "I can use a dental dam correctly or explain to my partner how to use a dental dam correctly"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater self-efficacy to use a dental dam, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Self-efficacy to Use a Dental Dam	2.43 score on a scale Standard Error 0.06	2.26 score on a scale Standard Error 0.05	2.40 score on a scale Standard Error 0.06

SECONDARY outcome

Timeframe: 12 month follow-up

1-item (e.g., "I can use a dental dam correctly or explain to my partner how to use a dental dam correctly"); rated on a 4-point Likert-type scale from 1 (strongly disagree) to 4 (strongly agree); higher scores indicate greater self-efficacy to use a dental dam, which is a more favorable outcome; range = 1-4. The overall number of participants analyzed in each Arm/Group includes all participants who completed pretest. Posttest data was imputed for participants that were present at pretest but not at posttest.

Outcome measures

Outcome measures
Measure	Intervention - Media Aware for Young Adults n=551 Participants This arm will receive Media Aware for Young Adults between the pretest and posttest questionnaire. Media Aware for Young Adults is a web-based sexual and relationship health promotion program that uses a media literacy education (MLE) approach. The program is self-paced and includes four modules. Media Aware for Young Adults: Media Aware for Young Adults is a web-based sexual and relationship health promotion program designed for young adults that uses a media literacy education (MLE) approach.	Delayed Intervention Control n=588 Participants Participants in this condition will not receive a sexual or relationship health promotion program until after the 12-month follow-up survey. After that survey is complete, they will receive access to the Media Aware for Young Adults program.	Active Comparator: Active Control - Health Aware for Young Adults n=508 Participants This arm will receive Health Aware for Young Adults in between the pretest and posttest questionnaire. Health Aware for Young Adults is a web-based sexual and relationship health promotion program. The program contains the same health content as Media Aware for Young Adults but without the media literacy education components. The program is self-paced and includes four modules.
Self-efficacy to Use a Dental Dam	2.45 score on a scale Standard Error 0.06	2.37 score on a scale Standard Error 0.05	2.32 score on a scale Standard Error 0.06

Adverse Events

Intervention - Media Aware for Young Adults

Serious events: 0 serious events

Other events: 0 other events

Deaths: 0 deaths

Active Control - Health Aware for Young Adults

Serious events: 0 serious events

Other events: 0 other events

Deaths: 0 deaths

Delayed Intervention Control

Serious events: 0 serious events

Other events: 0 other events

Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

Tracy Scull, PhD

innovation Research and Training

Phone: 9194937700

Email: [email protected]

Results disclosure agreements

Principal investigator is a sponsor employee
Publication restrictions are in place