Trial Outcomes & Findings for Personalized Health Assessment Related to Medications (Project PHARM) (NCT NCT03037476)

NCT ID: NCT03037476

Last Updated: 2023-08-01

Results Overview

Assesses frequency of non-medical use of prescription stimulant medications. Change was calculated from two time points as the value at the later time point minus the value at the earlier time point (e.g., value at 6 months minus value at baseline and the value at 12 months minus the value at baseline).

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

843 participants

Primary outcome timeframe

Baseline and 6 months, Baseline and 12 months

Results posted on

2023-08-01

Participant Flow

Participant milestones

Participant milestones
Measure
Web-Based PFI
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Overall Study
STARTED
414
429
Overall Study
COMPLETED
351
383
Overall Study
NOT COMPLETED
63
46

Reasons for withdrawal

Reasons for withdrawal
Measure
Web-Based PFI
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Overall Study
Lost to Follow-up
63
46

Baseline Characteristics

Personalized Health Assessment Related to Medications (Project PHARM)

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Web-Based PFI
n=414 Participants
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
n=429 Participants
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Total
n=843 Participants
Total of all reporting groups
Age, Categorical
<=18 years
45 Participants
n=5 Participants
31 Participants
n=7 Participants
76 Participants
n=5 Participants
Age, Categorical
Between 18 and 65 years
369 Participants
n=5 Participants
398 Participants
n=7 Participants
767 Participants
n=5 Participants
Age, Categorical
>=65 years
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Age, Continuous
19.82 years
STANDARD_DEVIATION 1.12 • n=5 Participants
19.95 years
STANDARD_DEVIATION 1.05 • n=7 Participants
19.88 years
STANDARD_DEVIATION 1.09 • n=5 Participants
Sex: Female, Male
Female
258 Participants
n=5 Participants
248 Participants
n=7 Participants
506 Participants
n=5 Participants
Sex: Female, Male
Male
156 Participants
n=5 Participants
181 Participants
n=7 Participants
337 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
46 Participants
n=5 Participants
41 Participants
n=7 Participants
87 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
366 Participants
n=5 Participants
388 Participants
n=7 Participants
754 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
2 Participants
n=5 Participants
0 Participants
n=7 Participants
2 Participants
n=5 Participants
Race (NIH/OMB)
American Indian or Alaska Native
2 Participants
n=5 Participants
3 Participants
n=7 Participants
5 Participants
n=5 Participants
Race (NIH/OMB)
Asian
81 Participants
n=5 Participants
88 Participants
n=7 Participants
169 Participants
n=5 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
1 Participants
n=5 Participants
3 Participants
n=7 Participants
4 Participants
n=5 Participants
Race (NIH/OMB)
Black or African American
21 Participants
n=5 Participants
16 Participants
n=7 Participants
37 Participants
n=5 Participants
Race (NIH/OMB)
White
263 Participants
n=5 Participants
276 Participants
n=7 Participants
539 Participants
n=5 Participants
Race (NIH/OMB)
More than one race
31 Participants
n=5 Participants
32 Participants
n=7 Participants
63 Participants
n=5 Participants
Race (NIH/OMB)
Unknown or Not Reported
15 Participants
n=5 Participants
11 Participants
n=7 Participants
26 Participants
n=5 Participants
Region of Enrollment
United States
414 participants
n=5 Participants
429 participants
n=7 Participants
843 participants
n=5 Participants

PRIMARY outcome

Timeframe: Baseline and 6 months, Baseline and 12 months

Population: Change in past 6 month number of days of nonmedical prescription stimulant use.

Assesses frequency of non-medical use of prescription stimulant medications. Change was calculated from two time points as the value at the later time point minus the value at the earlier time point (e.g., value at 6 months minus value at baseline and the value at 12 months minus the value at baseline).

Outcome measures

Outcome measures
Measure
Web-Based PFI
n=336 Participants
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
n=361 Participants
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Change in Past 6 Month Non-Medical Use of Prescription Stimulant Medication Frequency
6 Month Follow-up
-2.04 Usage days
Standard Deviation 5.72
-1.72 Usage days
Standard Deviation 6.88
Change in Past 6 Month Non-Medical Use of Prescription Stimulant Medication Frequency
12 Month Follow-up
-1.03 Usage days
Standard Deviation 7.91
-.38 Usage days
Standard Deviation 11.45

PRIMARY outcome

Timeframe: Baseline and 6 months, Baseline and 12 months

Population: These analyses were limited to individuals who reported a diagnosis of ADHD (n=62).

Assesses past 6 month medical misuse of prescription stimulant medication. Change was calculated from two time points as the value at the later time point minus the value at the earlier time point (e.g., value at 6 months minus value at baseline and the value at 12 months minus the value at baseline).

Outcome measures

Outcome measures
Measure
Web-Based PFI
n=27 Participants
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
n=35 Participants
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Change in Past 6 Month Medical Misuse of Prescription Stimulant Medication
6 Month Follow-up
-.30 Usage days
Standard Deviation .72
-.03 Usage days
Standard Deviation .62
Change in Past 6 Month Medical Misuse of Prescription Stimulant Medication
12 Month Follow-up
-.19 Usage days
Standard Deviation .74
-.07 Usage days
Standard Deviation .66

PRIMARY outcome

Timeframe: Baseline and 6 months, Baseline and 12 months

Population: Difference in number analyzed by condition are due to differences in follow-up participation rates and/or items skipped by participants.

Assesses problematic use of tobacco, alcohol, prescription, and illicit drugs over the past year and 3 months. Response options included: 0= Never, 1= Less than Monthly, 2= Monthly, 3= Weekly, 4= Daily or Almost Daily. Change was calculated from two time points as the value at the later time point minus the value at the earlier time point (e.g., value at 6 months minus value at baseline and the value at 12 months minus the value at baseline).

Outcome measures

Outcome measures
Measure
Web-Based PFI
n=333 Participants
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
n=359 Participants
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 12 Month Alcohol Use at 6 Month Followup
-.12 Score on a scale
Standard Deviation .90
-.02 Score on a scale
Standard Deviation .83
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 12 Month Other Drug Use at 6 Month Followup
-.16 Score on a scale
Standard Deviation 1.14
-.18 Score on a scale
Standard Deviation 1.08
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 12 Month Nonmedical Prescription Drug Use at 6 Month Followup
-.26 Score on a scale
Standard Deviation .87
-.24 Score on a scale
Standard Deviation .91
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 3 Month Marijuana Use at 6 Month Followup
-.12 Score on a scale
Standard Deviation .76
-.04 Score on a scale
Standard Deviation .77
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 3 Month Stimulant Use at 6 Month Followup
-.02 Score on a scale
Standard Deviation .58
-.08 Score on a scale
Standard Deviation .61
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 3 Month Stimulant Use at 12 Month Followup
-.09 Score on a scale
Standard Deviation .66
-.11 Score on a scale
Standard Deviation .70
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 3 Month Heroin Use at 6 Month Followup
.01 Score on a scale
Standard Deviation .26
.01 Score on a scale
Standard Deviation .15
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 3 Month Nonmedical Prescription Drug Use at 6 Month Followup
-.01 Score on a scale
Standard Deviation .26
-.04 Score on a scale
Standard Deviation .35
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 12 Month Tobacco Use at 6 Month Followup
-.03 Score on a scale
Standard Deviation 1.22
.06 Score on a scale
Standard Deviation .98
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 12 Month Tobacco Use at 12 Month Followup
0.15 Score on a scale
Standard Deviation 1.35
0.15 Score on a scale
Standard Deviation 1.18
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 12 Month Alcohol Use at 12 Month Followup
-.09 Score on a scale
Standard Deviation .89
-.1 Score on a scale
Standard Deviation .93
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 12 Month Other Drug Use at 12 Month Followup
-.17 Score on a scale
Standard Deviation 1.25
-.22 Score on a scale
Standard Deviation 1.22
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 12 Month Nonmedical Prescription Drug Use at 12 Month Followup
-.3 Score on a scale
Standard Deviation .97
-.28 Score on a scale
Standard Deviation .92
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 3 Month Tobacco Use at 6 Month Followup
-.04 Score on a scale
Standard Deviation .59
0 Score on a scale
Standard Deviation .53
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 3 Month Tobacco Use at 12 Month Followup
-.05 Score on a scale
Standard Deviation .61
.01 Score on a scale
Standard Deviation .56
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 3 Month Alcohol Use at 6 Month Followup
-.05 Score on a scale
Standard Deviation .78
-.1 Score on a scale
Standard Deviation .80
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 3 Month Alcohol Use at 12 Month Followup
-.90 Score on a scale
Standard Deviation .81
-.19 Score on a scale
Standard Deviation .92
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 3 Month Marijuana Use at 12 Month Followup
-.06 Score on a scale
Standard Deviation .80
-.09 Score on a scale
Standard Deviation .87
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 3 Month Heroin Use at 12 Month Followup
.01 Score on a scale
Standard Deviation .28
-.01 Score on a scale
Standard Deviation .15
Change in Tobacco, Alcohol, Prescription Medications, and Substance Use/Misuse Brief Screen/Assessment Tool (TAPS Tool)
Change in Past 3 Month Nonmedical Prescription Drug Use at 12 Month Followup
.04 Score on a scale
Standard Deviation .41
-.03 Score on a scale
Standard Deviation .36

PRIMARY outcome

Timeframe: Baseline and 6 months, Baseline and 12 months

Population: Difference in number analyzed by condition are due to differences in follow-up participation rates and/or items skipped by participants.

Measures past 3 month non-medical use of prescription stimulants and associated negative consequences. Items were summed to create a scale summary score where higher values indicated more problematic use in the past 3 months (min=0, max=40). Change was calculated from two time points as the value at the later time point minus the value at the earlier time point (e.g., value at 6 months minus value at baseline and the value at 12 months minus the value at baseline).

Outcome measures

Outcome measures
Measure
Web-Based PFI
n=330 Participants
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
n=356 Participants
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Change in Alcohol, Smoking and Substance Involvement Screening Test (ASSIST) - Stimulants Only
Change in ASSIST score at 6 month follow up
-1.420 Score on a scale
Standard Deviation 4.59
-1.08 Score on a scale
Standard Deviation 5.02
Change in Alcohol, Smoking and Substance Involvement Screening Test (ASSIST) - Stimulants Only
Change in ASSIST score at 12 month follow up
-1.26 Score on a scale
Standard Deviation 5.35
-1.19 Score on a scale
Standard Deviation 5.24

PRIMARY outcome

Timeframe: 6 and 12 month follow-up

Population: Difference in number analyzed by condition are due to differences in follow-up participation rates and/or items skipped by participants.

Assesses negative consequences associated with prescription stimulant misuse over the previous 6 months. A score of "0" indicates that a given consequence did not occur and a score of "1" indicates that it did occur. Items were summed to create a scale summary score of overall number of unique consequences that occurred in the past 6 months (min=0, max=19). Change was calculated from two time points as the value at the later time point minus the value at the earlier time point (e.g., value at 6 months minus value at baseline and the value at 12 months minus the value at baseline).

Outcome measures

Outcome measures
Measure
Web-Based PFI
n=329 Participants
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
n=357 Participants
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Change in Past 6 Month Prescription Stimulant Use Consequence Questionnaire
Change in consequence score at 6 months
-1.27 Score on a scale
Standard Deviation 3.8
-1.07 Score on a scale
Standard Deviation 3.65
Change in Past 6 Month Prescription Stimulant Use Consequence Questionnaire
Change in consequence score at 12 months
-0.92 Score on a scale
Standard Deviation 4.15
-1.11 Score on a scale
Standard Deviation 4.16

SECONDARY outcome

Timeframe: Baseline and 6 months, Baseline and 12 months

Population: Difference in number analyzed by condition are due to differences in follow-up participation rates and/or items skipped by participants.

Assesses quantity in standard drinks of peak drinking episode of alcohol consumption over the past month. Change was calculated from two time points as the value at the later time point minus the value at the earlier time point (e.g., value at 6 months minus value at baseline and the value at 12 months minus the value at baseline).

Outcome measures

Outcome measures
Measure
Web-Based PFI
n=322 Participants
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
n=357 Participants
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Change in Peak Quantity of Alcohol Consumed in Past Month
Change in peak alcohol standard drink total at 6 months
-0.94 standard drinks
Standard Deviation 3.71
-1.23 standard drinks
Standard Deviation 4.14
Change in Peak Quantity of Alcohol Consumed in Past Month
Change in peak standard drink total at 12 months
-1.26 standard drinks
Standard Deviation 3.82
-1.48 standard drinks
Standard Deviation 4.53

SECONDARY outcome

Timeframe: Baseline and 6 months, Baseline and 12 months

Population: Difference in number analyzed by condition are due to differences in follow-up participation rates and/or items skipped by participants.

Assesses typical alcohol consumption over the course of a typical week. Responses for number of drinks consumed each day of a typical week were summed to create a summary score of total number of drinks consumed over a typical week. Change was calculated from two time points as the value at the later time point minus the value at the earlier time point (e.g., value at 6 months minus value at baseline and the value at 12 months minus the value at baseline).

Outcome measures

Outcome measures
Measure
Web-Based PFI
n=312 Participants
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
n=350 Participants
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Change in Past 6 Month Daily Drinking Questionnaire
Change in DDQ score at 6 months
-2.09 Number of drinks
Standard Deviation 6.92
-2.11 Number of drinks
Standard Deviation 7.22
Change in Past 6 Month Daily Drinking Questionnaire
Change in DDQ score at 12 months
-2.81 Number of drinks
Standard Deviation 8.60
-2.07 Number of drinks
Standard Deviation 8.59

SECONDARY outcome

Timeframe: Baseline and 6 months, Baseline and 12 months

Population: Difference in number analyzed by condition are due to differences in follow-up participation rates and/or items skipped by participants.

Measures negative alcohol-related consequences experienced over the past 6 months. A score of "0" indicates that a given consequence did not occur and a score of "1" indicates that it did occur. Items were summed to create a scale summary score of overall number of unique consequences that occurred in the past 6 months (min=0, max=26). Change was calculated from two time points as the value at the later time point minus the value at the earlier time point (e.g., value at 6 months minus value at baseline and the value at 12 months minus the value at baseline).

Outcome measures

Outcome measures
Measure
Web-Based PFI
n=321 Participants
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
n=356 Participants
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Change in Past 6 Month Rutgers Alcohol Problem Index
Change in RAPI score at 6 month follow up
-1.66 Score on a scale
Standard Deviation 5.06
-1.42 Score on a scale
Standard Deviation 4.44
Change in Past 6 Month Rutgers Alcohol Problem Index
Change in RAPI score at 12 month follow up
-1.47 Score on a scale
Standard Deviation 5.71
-1.21 Score on a scale
Standard Deviation 4.94

SECONDARY outcome

Timeframe: Baseline and 6 months, Baseline and 12 months

Population: Difference in number analyzed by condition are due to differences in follow-up participation rates and/or items skipped by participants.

Items measure typical frequency of marijuana use and number of days used in the past year, 6 months, and 30 days. Change was calculated from two time points as the value at the later time point minus the value at the earlier time point (e.g., value at 6 months minus value at baseline and the value at 12 months minus the value at baseline).

Outcome measures

Outcome measures
Measure
Web-Based PFI
n=320 Participants
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
n=353 Participants
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Change in Past Year, 6 Month, and 30 Day Marijuana Use Frequency
Change in past year marijuana use at 6 month follow up
2.22 Usage days
Standard Deviation 72.74
3.60 Usage days
Standard Deviation 66.67
Change in Past Year, 6 Month, and 30 Day Marijuana Use Frequency
Change in past year marijuana use at 12 month follow up
3.90 Usage days
Standard Deviation 84.00
0.35 Usage days
Standard Deviation 87.60
Change in Past Year, 6 Month, and 30 Day Marijuana Use Frequency
Change in past 6 month marijuana use at 6 month follow-up
0.49 Usage days
Standard Deviation 36.58
1.69 Usage days
Standard Deviation 34.04
Change in Past Year, 6 Month, and 30 Day Marijuana Use Frequency
Change in past 6 month marijuana use at 12 month follow-up
2.22 Usage days
Standard Deviation 41.52
-0.57 Usage days
Standard Deviation 42.00
Change in Past Year, 6 Month, and 30 Day Marijuana Use Frequency
Change in past month marijuana use at 6 month follow-up
-0.07 Usage days
Standard Deviation 7.22
0.00 Usage days
Standard Deviation 7.33
Change in Past Year, 6 Month, and 30 Day Marijuana Use Frequency
Change in past month marijuana use at 12 month follow-up
-0.53 Usage days
Standard Deviation 8.56
-0.39 Usage days
Standard Deviation 8.47

SECONDARY outcome

Timeframe: Baseline and 6 months, Baseline and 12 months

Population: Difference in number analyzed by condition are due to differences in follow-up participation rates and/or items skipped by participants.

Measures negative marijuana-related consequences experienced over the past 6 months. A score of "0" indicates that a given consequence did not occur and a score of "1" indicates that it did occur. Items were summed to create a scale summary score of overall number of unique consequences that occurred in the past 6 months (min=0, max=26). Change was calculated from two time points as the value at the later time point minus the value at the earlier time point (e.g., value at 6 months minus value at baseline and the value at 12 months minus the value at baseline).

Outcome measures

Outcome measures
Measure
Web-Based PFI
n=316 Participants
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
n=347 Participants
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Change in Past 6 Month Rutgers Marijuana Problem Index
Change in RMPI count at 6 month follow up
-0.81 Score on a scale
Standard Deviation 6.13
-0.66 Score on a scale
Standard Deviation 5.53
Change in Past 6 Month Rutgers Marijuana Problem Index
Change in RMPI count at 12 month follow up
-0.81 Score on a scale
Standard Deviation 6.00
-1.01 Score on a scale
Standard Deviation 6.20

SECONDARY outcome

Timeframe: Baseline and 6 months, Baseline and 12 months

Population: Difference in number analyzed by condition are due to differences in follow-up participation rates and/or items skipped by participants.

Assesses frequency (days) of alcohol consumption over the past month (min=0, max=31). Change was calculated from two time points as the value at the later time point minus the value at the earlier time point (e.g., value at 6 months minus value at baseline and the value at 12 months minus the value at baseline).

Outcome measures

Outcome measures
Measure
Web-Based PFI
n=322 Participants
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
n=357 Participants
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Change in Frequency of Past Month Alcohol Consumption
Change in past month frequency alcohol at 6 months
-1.21 Usage days
Standard Deviation 4.94
-1.61 Usage days
Standard Deviation 5.45
Change in Frequency of Past Month Alcohol Consumption
Change in past month alcohol frequency at 12 months
-1.04 Usage days
Standard Deviation 5.63
-1.30 Usage days
Standard Deviation 6.36

SECONDARY outcome

Timeframe: Baseline and 6 months, Baseline and 12 months

Population: Difference in number analyzed by condition are due to differences in follow-up participation rates and/or items skipped by participants.

Assesses typical drinking quantity in standard drinks of alcohol consumed during a typical drinking occasion over the past month. Change was calculated from two time points as the value at the later time point minus the value at the earlier time point (e.g., value at 6 months minus value at baseline and the value at 12 months minus the value at baseline).

Outcome measures

Outcome measures
Measure
Web-Based PFI
n=322 Participants
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
n=357 Participants
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Change in Typical Quantity in Standard Drinks Consumed on a Typical Occasion in the Past Month
Change in past month typical quantity at 6 months
-1.47 standard drinks
Standard Deviation 3.82
-1.40 standard drinks
Standard Deviation 3.89
Change in Typical Quantity in Standard Drinks Consumed on a Typical Occasion in the Past Month
Change in past month typical quantity at 12 months
-1.90 standard drinks
Standard Deviation 4.16
-1.57 standard drinks
Standard Deviation 4.42

OTHER_PRE_SPECIFIED outcome

Timeframe: Baseline and 6 months, Baseline and 12 months

Population: Difference in number analyzed by condition are due to differences in follow-up participation rates and/or items skipped by participants.

Measures the use of relapse prevention strategies and protective behaviors related to stimulant medication misuse. A score of "0" indicates that a given strategy did not occur and a score of "1" indicates that it did occur. Items were summed to create a scale summary score of overall number of unique relapse prevention/protective behavior strategies that occurred in the past 6 months (min=0, max=28). Change was calculated from two time points as the value at the later time point minus the value at the earlier time point (e.g., value at 6 months minus value at baseline and the value at 12 months minus the value at baseline).

Outcome measures

Outcome measures
Measure
Web-Based PFI
n=316 Participants
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
n=347 Participants
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Change in Past 6 Month Relapse Prevention/Protective Behaviors Scale
Change in PBS count at 6 month follow up
-0.32 Score on a scale
Standard Deviation 6.03
-1.40 Score on a scale
Standard Deviation 6.62
Change in Past 6 Month Relapse Prevention/Protective Behaviors Scale
Change in PBS count at 12 month follow up
-0.77 Score on a scale
Standard Deviation 7.36
-1.30 Score on a scale
Standard Deviation 6.80

OTHER_PRE_SPECIFIED outcome

Timeframe: Baseline and 6 months, Baseline and 12 months

Population: Difference in number analyzed by condition are due to differences in follow-up participation rates and/or items skipped by participants.

Assesses the perceived percentage of students who have misused prescription stimulant medication in the past year. Change was calculated from two time points as the value at the later time point minus the value at the earlier time point (e.g., value at 6 months minus value at baseline and the value at 12 months minus the value at baseline).

Outcome measures

Outcome measures
Measure
Web-Based PFI
n=336 Participants
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
n=360 Participants
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Change in Past Year Prescription Stimulant Norms Rating Form
Change in perceived norm (in perceived past year days of use) at 6 month
-9.29 Percentage
Standard Deviation 19.37
-4.11 Percentage
Standard Deviation 20.44
Change in Past Year Prescription Stimulant Norms Rating Form
Change in perceived norm (in perceived past year days of use) at 12 month
-11.10 Percentage
Standard Deviation 20.99
-6.36 Percentage
Standard Deviation 18.50

OTHER_PRE_SPECIFIED outcome

Timeframe: Baseline and 6 months, Baseline and 12 months

Population: Difference in number analyzed by condition are due to differences in follow-up participation rates and/or items skipped by participants.

A 19-item abbreviated version of the Motivated Strategies for Learning Questionnaire was used to measures the use of different types of learning strategies and academic motivations during the current semester/quarter. Response options ranged from 1=Not at all true of me to 7=Very true of me. Mean scale scores were computed and change was calculated from two time points as the value at the later time point minus the value at the earlier time point (e.g., value at 6 months minus value at baseline and the value at 12 months minus the value at baseline).

Outcome measures

Outcome measures
Measure
Web-Based PFI
n=312 Participants
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
n=351 Participants
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Change in Current Semester/Quarter Motivated Strategies for Learning Questionnaire (MSLQ)
Change in MSLQ score at 6 month follow up
-0.10 Score on a scale
Standard Deviation 1.07
-0.08 Score on a scale
Standard Deviation 0.95
Change in Current Semester/Quarter Motivated Strategies for Learning Questionnaire (MSLQ)
Change in MSLQ score at 12 month follow up
-0.01 Score on a scale
Standard Deviation 1.06
-0.1 Score on a scale
Standard Deviation 1.09

OTHER_PRE_SPECIFIED outcome

Timeframe: 6 and 12 month follow-up

Population: Difference in number analyzed by condition are due to differences in follow-up participation rates and/or items skipped by participants.

Participants report their cumulative and previous semester/quarter GPA. Change was calculated from two time points as the value at the later time point minus the value at the earlier time point (e.g., value at 6 months minus value at baseline and the value at 12 months minus the value at baseline).

Outcome measures

Outcome measures
Measure
Web-Based PFI
n=335 Participants
Participants randomized to the web-based PFI in Study 2 receive a 5 component Personalized Feedback Tool. The first component is presented immediately after the baseline survey and a link to each of the remaining 4 components is sent to participants spaced 1 to 2 weeks apart. The PFI components cover: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol. Each component is comprised of personalized feedback presented in text and graphic format, and each component includes links to tips for making changes if and when the participant is contemplating or ready to commit to change. These tips include general relapse prevention strategies, as well as information about the importance of regular class attendance, study habits, and sleep habits for academic success. General educational tips/strategies for time management, as well as tips for initiating behavior change are also included. Each component takes approximately 5-10 minutes to review. Web-based PFI: A web-based 5 component Personalized Feedback Tool covering content on: 1) Stimulants, 2) Marijuana, 3) PSM and unwanted effects, 4) Academics, and 5) Alcohol.
Assessment Only
n=366 Participants
The Assessment Only group receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6-month follow-up, and 12-month follow-up in Study 2. Assessment Only: The Assessment Only condition receives assessment on substance use, health behaviors, and academic behaviors at baseline, 6 month follow-up, and 12 month follow-up.
Change in Cumulative and Last Semester/Quarter Grade Point Average (GPA)
Change in cumulative GPA at 6 month follow up
0.01 Score on a scale
Standard Deviation 0.21
-0.002 Score on a scale
Standard Deviation 0.20
Change in Cumulative and Last Semester/Quarter Grade Point Average (GPA)
Change in cumulative GPA at 12 month follow-up
0.02 Score on a scale
Standard Deviation 0.26
0.03 Score on a scale
Standard Deviation 0.24
Change in Cumulative and Last Semester/Quarter Grade Point Average (GPA)
Change in last term GPA at 6 month follow-up
0.05 Score on a scale
Standard Deviation 0.45
0.01 Score on a scale
Standard Deviation 0.45
Change in Cumulative and Last Semester/Quarter Grade Point Average (GPA)
Change in last term GPA at 12 month follow-up
0.05 Score on a scale
Standard Deviation 0.50
0.24 Score on a scale
Standard Deviation 0.48

Adverse Events

Web-Based PFI

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Assessment Only

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

Jason Kilmer, Ph.D.

University of Washington

Phone: 206-685-4512

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place