Trial Outcomes & Findings for Just-in-time Adaptive Intervention Messaging in a Digital Weight Loss Intervention for Young Adults (NCT NCT05625061)
NCT ID: NCT05625061
Last Updated: 2026-01-27
Results Overview
Each observation corresponds to a microrandomization decision point; the reported value reflects the outcome measured within that unit. Among the randomization observations in which the participant had not yet weighed, this outcome is the number of observations in which the daily weighing goal was met after receiving or not receiving a message and before the end of the day. Observations are accumulated across participants and across time. On the day of randomization, a dichotomous outcome of whether a participant weighed or did not weigh is calculated.
Recruitment status
COMPLETED
Study phase
NA
Target enrollment
255 participants
Primary outcome timeframe
Daily throughout the study, a total of up to 24 weeks
Results posted on
2026-01-27
Participant Flow
A total of 911 individuals completed the online screening survey; 533 met initial eligibility criteria; and 255 signed informed consent. Following consent, 206 completed all required onboarding and baseline measurement procedures and began the study.
Participants who signed informed consent were required to complete all onboarding steps, including baseline surveys, remote weight measurements, and the kickoff session. The 206 who completed these procedures and remained eligible began the study.
Participant milestones
| Measure |
Core Behavioral Weight Loss (BWL) Intervention
Behavioral weight loss core intervention, includes activity tracker, wireless scale, daily self-weighing, and smartphone app with weekly behavioral lessons, food tracking log, weekly tailored feedback summary, and daily weight-related behavioral goals. Core intervention component is combined with each of the 7 intervention messages to be tested repeatedly over time.
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|---|---|
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Overall Study
STARTED
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206
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Overall Study
Completed 3-Month Visit
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204
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Overall Study
COMPLETED
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201
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Overall Study
NOT COMPLETED
|
5
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Reasons for withdrawal
| Measure |
Core Behavioral Weight Loss (BWL) Intervention
Behavioral weight loss core intervention, includes activity tracker, wireless scale, daily self-weighing, and smartphone app with weekly behavioral lessons, food tracking log, weekly tailored feedback summary, and daily weight-related behavioral goals. Core intervention component is combined with each of the 7 intervention messages to be tested repeatedly over time.
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|---|---|
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Overall Study
Withdrawal by Subject
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4
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Overall Study
Intervention Suspended
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1
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Baseline Characteristics
Just-in-time Adaptive Intervention Messaging in a Digital Weight Loss Intervention for Young Adults
Baseline characteristics by cohort
| Measure |
Core Behavioral Weight Loss (BWL) Intervention
n=206 Participants
Behavioral weight loss core intervention, includes activity tracker, wireless scale, daily self-weighing, and smartphone app with weekly behavioral lessons, food tracking log, weekly tailored feedback summary, and daily weight-related behavioral goals. Core intervention component is combined with each of the 7 intervention messages to be tested repeatedly over time.
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|---|---|
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Age, Continuous
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32.8 years
STANDARD_DEVIATION 5.5 • n=25 Participants
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Sex/Gender, Customized
Sex (NIH/OMB) · Female
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134 Participants
n=25 Participants
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Sex/Gender, Customized
Sex (NIH/OMB) · Male
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71 Participants
n=25 Participants
|
|
Sex/Gender, Customized
Sex (NIH/OMB) · Prefer not to answer
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1 Participants
n=25 Participants
|
|
Race (NIH/OMB)
American Indian or Alaska Native
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3 Participants
n=25 Participants
|
|
Race (NIH/OMB)
Asian
|
20 Participants
n=25 Participants
|
|
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
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0 Participants
n=25 Participants
|
|
Race (NIH/OMB)
Black or African American
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20 Participants
n=25 Participants
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|
Race (NIH/OMB)
White
|
148 Participants
n=25 Participants
|
|
Race (NIH/OMB)
More than one race
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8 Participants
n=25 Participants
|
|
Race (NIH/OMB)
Unknown or Not Reported
|
7 Participants
n=25 Participants
|
|
Ethnicity (NIH/OMB)
Hispanic or Latino
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34 Participants
n=25 Participants
|
|
Ethnicity (NIH/OMB)
Not Hispanic or Latino
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169 Participants
n=25 Participants
|
|
Ethnicity (NIH/OMB)
Unknown or Not Reported
|
3 Participants
n=25 Participants
|
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Weight (kg)
|
94.5 kilograms
STANDARD_DEVIATION 20.1 • n=25 Participants
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PRIMARY outcome
Timeframe: Daily throughout the study, a total of up to 24 weeksPopulation: The number of observations analyzed in each arm reflects the total number of observations (across participants, across the study) in which a message of that type was either received or not received, as noted in the arm description. The number of participants analyzed is the total number of participants whose observations are included in that particular arm. The Social Reward BCT was not delivered for the outcome of daily weighing and thus no data were collected for BCT 6.
Each observation corresponds to a microrandomization decision point; the reported value reflects the outcome measured within that unit. Among the randomization observations in which the participant had not yet weighed, this outcome is the number of observations in which the daily weighing goal was met after receiving or not receiving a message and before the end of the day. Observations are accumulated across participants and across time. On the day of randomization, a dichotomous outcome of whether a participant weighed or did not weigh is calculated.
Outcome measures
| Measure |
Any Message: Received
n=25049 Observations
All observations in which microrandomization resulted in receiving the message (a message with any behavior or BCT).
|
Any Message: Not Received
n=24935 Observations
All observations in which microrandomization resulted in not receiving the message (a message with any behavior or BCT).
|
Weighing Message: Received
n=8387 Observations
All observations in which weighing was the assigned behavior and microrandomization resulted in receiving the message (with any BCT).
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Weighing Message: Not Received
n=8307 Observations
All observations in which weighing was the assigned behavior and microrandomization resulted in not receiving the message (with any BCT).
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Weighing BCT 1 Message (Action Planning): Received
n=1401 Observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 1 Message (Action Planning): Not Received
n=1418 Observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in not receiving the message.
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Weighing BCT 2 Message (Discrepancy): Received
n=1482 Observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 2 Message (Discrepancy): Not Received
n=1400 Observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in not receiving the message.
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Weighing BCT 3 Message (Feedback on Outcome of Behavior): Received
n=1437 Observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Not Received
n=1389 Observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 4 Message (Social Support): Received
n=1436 Observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 4 Message (Social Support): Not Received
n=1460 Observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Received
n=1349 Observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 5 Message (Social Comparison): Not Received
n=1333 Observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in not receiving the message.
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Weighing BCT 6 Message (Social Reward): Received
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 6 (Social Reward) Message: Not Received
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in not receiving the message.
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Weighing BCT 7 Message (Focus on Past Success): Received
n=1282 Observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 7 Message (Focus on Past Success): Not Received
n=1307 Observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in not receiving the message.
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Met Daily Weighing Goal
|
4399 goals met
|
4167 goals met
|
1496 goals met
|
1393 goals met
|
249 goals met
|
226 goals met
|
266 goals met
|
247 goals met
|
268 goals met
|
228 goals met
|
237 goals met
|
264 goals met
|
257 goals met
|
210 goals met
|
—
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—
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219 goals met
|
218 goals met
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PRIMARY outcome
Timeframe: Daily throughout the study, a total of up to 24 weeksPopulation: The number of observations analyzed in each arm reflects the total number of observations (across participants, across the study) in which a message of that type was either received or not received, as noted in the arm description. The number of participants analyzed is the total number of participants whose observations are included in that particular arm.
Each observation corresponds to a microrandomization decision point; the reported value reflects the outcome measured within that unit. Among the randomization observations in which the participant had not yet met their active minutes goal, this outcome is the number of observations in which the daily active minutes goal was met after receiving or not receiving a message and before the end of the day. Observations are accumulated across participants and across time. On the day of randomization, a dichotomous outcome of whether a participant met or did not meet their active minutes goal is calculated.
Outcome measures
| Measure |
Any Message: Received
n=46097 Observations
All observations in which microrandomization resulted in receiving the message (a message with any behavior or BCT).
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Any Message: Not Received
n=45945 Observations
All observations in which microrandomization resulted in not receiving the message (a message with any behavior or BCT).
|
Weighing Message: Received
n=15347 Observations
All observations in which weighing was the assigned behavior and microrandomization resulted in receiving the message (with any BCT).
|
Weighing Message: Not Received
n=15353 Observations
All observations in which weighing was the assigned behavior and microrandomization resulted in not receiving the message (with any BCT).
|
Weighing BCT 1 Message (Action Planning): Received
n=2506 Observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 1 Message (Action Planning): Not Received
n=2412 Observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Received
n=2336 Observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 2 Message (Discrepancy): Not Received
n=2488 Observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in not receiving the message.
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Weighing BCT 3 Message (Feedback on Outcome of Behavior): Received
n=2352 Observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 3 Message (Feedback on Outcome of Behavior): Not Received
n=2378 Observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in not receiving the message.
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Weighing BCT 4 Message (Social Support): Received
n=2379 Observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 4 Message (Social Support): Not Received
n=2379 Observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in not receiving the message.
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Weighing BCT 5 Message (Social Comparison): Received
n=2324 Observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 5 Message (Social Comparison): Not Received
n=2311 Observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in not receiving the message.
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Weighing BCT 6 Message (Social Reward): Received
n=1264 Observations
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 6 (Social Reward) Message: Not Received
n=1253 Observations
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in not receiving the message.
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Weighing BCT 7 Message (Focus on Past Success): Received
n=2186 Observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 7 Message (Focus on Past Success): Not Received
n=2132 Observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in not receiving the message.
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Met Daily Active Minutes Goal
|
8781 goals met
|
8727 goals met
|
2905 goals met
|
2959 goals met
|
473 goals met
|
456 goals met
|
410 goals met
|
456 goals met
|
456 goals met
|
474 goals met
|
447 goals met
|
452 goals met
|
397 goals met
|
408 goals met
|
288 goals met
|
292 goals met
|
434 goals met
|
421 goals met
|
PRIMARY outcome
Timeframe: Daily throughout the study, a total of up to 24 weeksPopulation: The number of observations analyzed in each arm reflects the total number of observations (across participants, across the study) in which a message of that type was either received or not received, as noted in the arm description. The number of participants analyzed is the total number of participants whose observations are included in that particular arm.
Each observation corresponds to a microrandomization decision point; the reported value reflects the outcome measured within that unit. Among the randomization observations in which the participant had not yet exceeded their red foods limit, this outcome is the number of observations in which the participant stayed at or under their daily red foods limit after receiving or not receiving a message and before the end of the day. Observations are accumulated across participants and across time. On the day of randomization, a dichotomous outcome of whether a participant stayed at or under their red foods limit or did not is calculated.
Outcome measures
| Measure |
Any Message: Received
n=50335 Observations
All observations in which microrandomization resulted in receiving the message (a message with any behavior or BCT).
|
Any Message: Not Received
n=50397 Observations
All observations in which microrandomization resulted in not receiving the message (a message with any behavior or BCT).
|
Weighing Message: Received
n=16717 Observations
All observations in which weighing was the assigned behavior and microrandomization resulted in receiving the message (with any BCT).
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Weighing Message: Not Received
n=16896 Observations
All observations in which weighing was the assigned behavior and microrandomization resulted in not receiving the message (with any BCT).
|
Weighing BCT 1 Message (Action Planning): Received
n=2818 Observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 1 Message (Action Planning): Not Received
n=2846 Observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Received
n=2760 Observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 2 Message (Discrepancy): Not Received
n=2795 Observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Received
n=2780 Observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Not Received
n=2818 Observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in not receiving the message.
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Weighing BCT 4 Message (Social Support): Received
n=2896 Observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 4 Message (Social Support): Not Received
n=2814 Observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Received
n=2686 Observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 5 Message (Social Comparison): Not Received
n=2683 Observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 6 Message (Social Reward): Received
n=440 Observations
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 6 (Social Reward) Message: Not Received
n=437 Observations
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Received
n=2337 Observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in receiving the message.
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Weighing BCT 7 Message (Focus on Past Success): Not Received
n=2503 Observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in not receiving the message.
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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At or Under Daily Red Foods Limit
|
13080 goals met
|
12848 goals met
|
4385 goals met
|
4261 goals met
|
724 goals met
|
711 goals met
|
730 goals met
|
647 goals met
|
715 goals met
|
671 goals met
|
743 goals met
|
708 goals met
|
639 goals met
|
677 goals met
|
201 goals met
|
180 goals met
|
633 goals met
|
667 goals met
|
SECONDARY outcome
Timeframe: Baseline, 6 monthsPopulation: This analysis includes the 193 participants who completed the 6-month weight measurement.
Absolute weight change (kg) from baseline to 6 months (6-month weight - baseline weight). Weight was objectively measured on a digital scale in the participant's home.
Outcome measures
| Measure |
Any Message: Received
n=193 Participants
All observations in which microrandomization resulted in receiving the message (a message with any behavior or BCT).
|
Any Message: Not Received
All observations in which microrandomization resulted in not receiving the message (a message with any behavior or BCT).
|
Weighing Message: Received
All observations in which weighing was the assigned behavior and microrandomization resulted in receiving the message (with any BCT).
|
Weighing Message: Not Received
All observations in which weighing was the assigned behavior and microrandomization resulted in not receiving the message (with any BCT).
|
Weighing BCT 1 Message (Action Planning): Received
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 1 Message (Action Planning): Not Received
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Received
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Not Received
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Received
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Not Received
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 4 Message (Social Support): Received
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 4 Message (Social Support): Not Received
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Received
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Not Received
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 6 Message (Social Reward): Received
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 6 (Social Reward) Message: Not Received
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Received
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Not Received
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in not receiving the message.
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Weight Change
|
-2.45 kg
Standard Deviation 5.01
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—
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—
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SECONDARY outcome
Timeframe: Baseline, 6 monthsPopulation: This analysis includes only the 193 participants who completed the 6-month weight measurement.
Change in weight (%) from baseline to 6 months. Weight will be objectively measured on a digital scale in the participant's home. Percent weight change at 6 months is calculated as ((weight (kg) at 6 months - weight (kg) at baseline)/(weight (kg) at baseline))\*100
Outcome measures
| Measure |
Any Message: Received
n=193 Participants
All observations in which microrandomization resulted in receiving the message (a message with any behavior or BCT).
|
Any Message: Not Received
All observations in which microrandomization resulted in not receiving the message (a message with any behavior or BCT).
|
Weighing Message: Received
All observations in which weighing was the assigned behavior and microrandomization resulted in receiving the message (with any BCT).
|
Weighing Message: Not Received
All observations in which weighing was the assigned behavior and microrandomization resulted in not receiving the message (with any BCT).
|
Weighing BCT 1 Message (Action Planning): Received
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 1 Message (Action Planning): Not Received
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Received
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Not Received
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Received
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Not Received
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 4 Message (Social Support): Received
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 4 Message (Social Support): Not Received
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Received
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Not Received
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 6 Message (Social Reward): Received
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 6 (Social Reward) Message: Not Received
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Received
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Not Received
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in not receiving the message.
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Percent Weight Change
|
-2.65 percent weight change
Standard Deviation 5.24
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SECONDARY outcome
Timeframe: Daily throughout the study, a total of up to 24 weeksCalculation of the proportion of study days weighed across all study participants across all days.
Outcome measures
| Measure |
Any Message: Received
n=206 Participants
All observations in which microrandomization resulted in receiving the message (a message with any behavior or BCT).
|
Any Message: Not Received
All observations in which microrandomization resulted in not receiving the message (a message with any behavior or BCT).
|
Weighing Message: Received
All observations in which weighing was the assigned behavior and microrandomization resulted in receiving the message (with any BCT).
|
Weighing Message: Not Received
All observations in which weighing was the assigned behavior and microrandomization resulted in not receiving the message (with any BCT).
|
Weighing BCT 1 Message (Action Planning): Received
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 1 Message (Action Planning): Not Received
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Received
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Not Received
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Received
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Not Received
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 4 Message (Social Support): Received
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 4 Message (Social Support): Not Received
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Received
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Not Received
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 6 Message (Social Reward): Received
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 6 (Social Reward) Message: Not Received
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Received
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Not Received
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in not receiving the message.
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Proportion of Days Met Daily Weighing Goal
|
0.585 proportion of days
Standard Deviation 0.280
|
—
|
—
|
—
|
—
|
—
|
—
|
—
|
—
|
—
|
—
|
—
|
—
|
—
|
—
|
—
|
—
|
—
|
SECONDARY outcome
Timeframe: Daily throughout the study, a total of up to 24 weeksPopulation: The number of observations analyzed in each arm reflects the total number of observations (across participants, across the study) in which a message of that type was either received or not received, as noted in the arm description. The number of participants analyzed is the total number of participants whose observations are included in that particular arm.
Among randomization observations, the mean proportion of the daily active minutes goal that was achieved that day. Observations are accumulated across participants and across time. Each observation corresponds to a microrandomization decision point; the reported value reflects the outcome measured within that unit. On the day of randomization, a ratio of the participant's total active minutes that day over their daily active minutes goal is calculated (total active minutes that day/daily active minutes goal), such that observations in which a participant exceeded their goal have a proportion over 1.0 and those in which a participant did not reach their active minutes goal have a proportion under 1.0.
Outcome measures
| Measure |
Any Message: Received
n=206 Participants
All observations in which microrandomization resulted in receiving the message (a message with any behavior or BCT).
|
Any Message: Not Received
n=206 Participants
All observations in which microrandomization resulted in not receiving the message (a message with any behavior or BCT).
|
Weighing Message: Received
n=206 Participants
All observations in which weighing was the assigned behavior and microrandomization resulted in receiving the message (with any BCT).
|
Weighing Message: Not Received
n=17003 Observations
All observations in which weighing was the assigned behavior and microrandomization resulted in not receiving the message (with any BCT).
|
Weighing BCT 1 Message (Action Planning): Received
n=2747 Observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 1 Message (Action Planning): Not Received
n=2624 Observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Received
n=2547 Observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Not Received
n=2699 Observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Received
n=2614 Observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Not Received
n=2644 Observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 4 Message (Social Support): Received
n=2639 Observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 4 Message (Social Support): Not Received
n=2649 Observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Received
n=2529 Observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Not Received
n=2517 Observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 6 Message (Social Reward): Received
n=1507 Observations
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 6 (Social Reward) Message: Not Received
n=1519 Observations
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Received
n=2403 Observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Not Received
n=2351 Observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in not receiving the message.
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Proportion of Daily Active Minutes Goal Met
|
0.795 proportion of active minutes goal met
Standard Deviation 1.738
|
0.802 proportion of active minutes goal met
Standard Deviation 1.724
|
0.789 proportion of active minutes goal met
Standard Deviation 1.705
|
0.808 proportion of active minutes goal met
Standard Deviation 1.762
|
0.762 proportion of active minutes goal met
Standard Deviation 1.840
|
0.803 proportion of active minutes goal met
Standard Deviation 1.985
|
0.739 proportion of active minutes goal met
Standard Deviation 1.584
|
0.711 proportion of active minutes goal met
Standard Deviation 1.643
|
0.825 proportion of active minutes goal met
Standard Deviation 1.732
|
0.863 proportion of active minutes goal met
Standard Deviation 1.708
|
0.768 proportion of active minutes goal met
Standard Deviation 1.486
|
0.795 proportion of active minutes goal met
Standard Deviation 1.519
|
0.689 proportion of active minutes goal met
Standard Deviation 1.472
|
0.736 proportion of active minutes goal met
Standard Deviation 2.028
|
1.100 proportion of active minutes goal met
Standard Deviation 2.246
|
1.063 proportion of active minutes goal met
Standard Deviation 1.910
|
0.771 proportion of active minutes goal met
Standard Deviation 0.790
|
1.683 proportion of active minutes goal met
Standard Deviation 1.504
|
SECONDARY outcome
Timeframe: Daily throughout the study, a total of up to 24 weeksPopulation: The number of observations analyzed in each arm reflects the total number of observations (across participants, across the study) in which a message of that type was either received or not received, as noted in the arm description. The number of participants analyzed is the total number of participants whose observations are included in that particular arm.
Among randomization observations, the mean proportion of the daily red foods limit that was tracked that day. Observations are accumulated across participants and across time. Each observation corresponds to a microrandomization decision point; the reported value reflects the outcome measured within that unit. On the day of randomization, a ratio (proportion) of the participant's total red foods that day over their daily red foods limit is calculated (total red foods that day/daily red foods limit), such that observations in which a participant exceeded their limit have a proportion over 1.0 and those in which a participant did not exceed their red foods limit have a proportion under 1.0.
Outcome measures
| Measure |
Any Message: Received
n=20967 observations
All observations in which microrandomization resulted in receiving the message (a message with any behavior or BCT).
|
Any Message: Not Received
n=20635 observations
All observations in which microrandomization resulted in not receiving the message (a message with any behavior or BCT).
|
Weighing Message: Received
n=7001 observations
All observations in which weighing was the assigned behavior and microrandomization resulted in receiving the message (with any BCT).
|
Weighing Message: Not Received
n=6866 observations
All observations in which weighing was the assigned behavior and microrandomization resulted in not receiving the message (with any BCT).
|
Weighing BCT 1 Message (Action Planning): Received
n=1148 observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 1 Message (Action Planning): Not Received
n=1129 observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Received
n=1168 observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Not Received
n=1058 observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Received
n=1147 observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Not Received
n=1127 observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 4 Message (Social Support): Received
n=1179 observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 4 Message (Social Support): Not Received
n=1140 observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Received
n=1028 observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Not Received
n=1025 observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 6 Message (Social Reward): Received
n=355 observations
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 6 (Social Reward) Message: Not Received
n=341 observations
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Received
n=976 observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Not Received
n=1046 observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in not receiving the message.
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Proportion of Daily Red Foods Limit
|
1.042 proportion of red foods limit
Standard Deviation 0.644
|
1.050 proportion of red foods limit
Standard Deviation 0.687
|
1.040 proportion of red foods limit
Standard Deviation 0.644
|
1.052 proportion of red foods limit
Standard Deviation 0.688
|
1.017 proportion of red foods limit
Standard Deviation 0.558
|
1.055 proportion of red foods limit
Standard Deviation 0.670
|
1.043 proportion of red foods limit
Standard Deviation 0.627
|
1.049 proportion of red foods limit
Standard Deviation 0.659
|
1.065 proportion of red foods limit
Standard Deviation 0.764
|
1.088 proportion of red foods limit
Standard Deviation 0.715
|
1.041 proportion of red foods limit
Standard Deviation 0.671
|
1.034 proportion of red foods limit
Standard Deviation 0.661
|
1.014 proportion of red foods limit
Standard Deviation 0.567
|
1.017 proportion of red foods limit
Standard Deviation 0.705
|
1.174 proportion of red foods limit
Standard Deviation 0.760
|
1.171 proportion of red foods limit
Standard Deviation 0.789
|
1.011 proportion of red foods limit
Standard Deviation 0.593
|
1.025 proportion of red foods limit
Standard Deviation 0.677
|
SECONDARY outcome
Timeframe: Daily throughout the study, a total of up to 24 weeksPopulation: The number of observations analyzed in each arm reflects the total number of observations (across participants, across the study) in which a message of that type was either received or not received, as noted in the arm description. The number of participants analyzed is the total number of participants whose observations are included in that particular arm.
Among randomization observations, the total number of active minutes that was achieved by the participant on the day of randomization. Observations are accumulated across participants and across time. Each observation corresponds to a microrandomization decision point; the reported value reflects the outcome measured within that unit.
Outcome measures
| Measure |
Any Message: Received
n=50986 observations
All observations in which microrandomization resulted in receiving the message (a message with any behavior or BCT).
|
Any Message: Not Received
n=51019 observations
All observations in which microrandomization resulted in not receiving the message (a message with any behavior or BCT).
|
Weighing Message: Received
n=16986 observations
All observations in which weighing was the assigned behavior and microrandomization resulted in receiving the message (with any BCT).
|
Weighing Message: Not Received
n=17003 observations
All observations in which weighing was the assigned behavior and microrandomization resulted in not receiving the message (with any BCT).
|
Weighing BCT 1 Message (Action Planning): Received
n=2747 observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 1 Message (Action Planning): Not Received
n=2624 observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Received
n=2547 observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Not Received
n=2699 observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Received
n=2614 observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Not Received
n=2644 observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 4 Message (Social Support): Received
n=2639 observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 4 Message (Social Support): Not Received
n=2649 observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Received
n=2529 observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Not Received
n=2517 observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 6 Message (Social Reward): Received
n=1507 observations
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 6 (Social Reward) Message: Not Received
n=1519 observations
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Received
n=2403 observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Not Received
n=2351 observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in not receiving the message.
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Number of Active Minutes
|
29.05 total active minutes
Standard Deviation 48.33
|
29.44 total active minutes
Standard Deviation 48.95
|
28.86 total active minutes
Standard Deviation 46.92
|
29.61 total active minutes
Standard Deviation 50.29
|
27.36 total active minutes
Standard Deviation 44.07
|
28.08 total active minutes
Standard Deviation 52.95
|
26.93 total active minutes
Standard Deviation 46.93
|
26.96 total active minutes
Standard Deviation 49.01
|
28.68 total active minutes
Standard Deviation 46.62
|
30.17 total active minutes
Standard Deviation 49.80
|
27.92 total active minutes
Standard Deviation 44.93
|
28.84 total active minutes
Standard Deviation 47.36
|
26.94 total active minutes
Standard Deviation 44.50
|
27.80 total active minutes
Standard Deviation 51.54
|
39.09 total active minutes
Standard Deviation 55.52
|
38.44 total active minutes
Standard Deviation 51.61
|
29.43 total active minutes
Standard Deviation 48.36
|
30.82 total active minutes
Standard Deviation 49.63
|
SECONDARY outcome
Timeframe: Daily throughout the study, a total of up to 24 weeksPopulation: The number of observations analyzed in each arm reflects the total number of observations (across participants, across the study) in which a message of that type was either received or not received, as noted in the arm description. The number of participants analyzed is the total number of participants whose observations are included in that particular arm.
Among randomization observations, the total number of red foods that was tracked by the participant on the day of randomization. Observations are accumulated across participants and across time. Each observation corresponds to a microrandomization decision point; the reported value reflects the outcome measured within that unit.
Outcome measures
| Measure |
Any Message: Received
n=20967 Observations
All observations in which microrandomization resulted in receiving the message (a message with any behavior or BCT).
|
Any Message: Not Received
n=20635 Observations
All observations in which microrandomization resulted in not receiving the message (a message with any behavior or BCT).
|
Weighing Message: Received
n=7001 Observations
All observations in which weighing was the assigned behavior and microrandomization resulted in receiving the message (with any BCT).
|
Weighing Message: Not Received
n=6866 Observations
All observations in which weighing was the assigned behavior and microrandomization resulted in not receiving the message (with any BCT).
|
Weighing BCT 1 Message (Action Planning): Received
n=1148 Observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 1 Message (Action Planning): Not Received
n=1129 Observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Received
n=1168 Observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Not Received
n=1058 Observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Received
n=1147 Observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Not Received
n=1127 Observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 4 Message (Social Support): Received
n=1179 Observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 4 Message (Social Support): Not Received
n=1140 Observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Received
n=1028 Observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Not Received
n=1025 Observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 6 Message (Social Reward): Received
n=355 Observations
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 6 (Social Reward) Message: Not Received
n=341 Observations
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Received
n=976 Observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Not Received
n=1046 Observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in not receiving the message.
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Number of Red Foods
|
3.45 total red foods
Standard Deviation 2.08
|
3.47 total red foods
Standard Deviation 2.14
|
3.45 total red foods
Standard Deviation 2.08
|
3.47 total red foods
Standard Deviation 2.14
|
3.39 total red foods
Standard Deviation 1.96
|
3.48 total red foods
Standard Deviation 2.07
|
3.48 total red foods
Standard Deviation 2.04
|
3.47 total red foods
Standard Deviation 2.03
|
3.49 total red foods
Standard Deviation 2.20
|
3.61 total red foods
Standard Deviation 2.29
|
3.44 total red foods
Standard Deviation 2.16
|
3.45 total red foods
Standard Deviation 2.16
|
3.39 total red foods
Standard Deviation 1.99
|
3.32 total red foods
Standard Deviation 2.08
|
3.79 total red foods
Standard Deviation 2.18
|
3.79 total red foods
Standard Deviation 2.30
|
3.37 total red foods
Standard Deviation 2.03
|
3.39 total red foods
Standard Deviation 2.14
|
SECONDARY outcome
Timeframe: Daily throughout the study, a total of up to 24 weeksPopulation: The number of observations analyzed in each arm reflects the total number of observations (across participants, across the study) in which a message of that type was either received or not received, as noted in the arm description. The number of participants analyzed is the total number of participants whose observations are included in that particular arm.
Each observation corresponds to a microrandomization decision point; the reported value reflects the outcome measured within that unit. Among the randomization observations, this outcome is the number of observations in which the daily weighing goal was met the day following randomization. Observations are accumulated across participants and across time. On the day following randomization, a dichotomous outcome of whether a participant weighed or did not weigh is assessed.
Outcome measures
| Measure |
Any Message: Received
n=50986 Observations
All observations in which microrandomization resulted in receiving the message (a message with any behavior or BCT).
|
Any Message: Not Received
n=51019 Observations
All observations in which microrandomization resulted in not receiving the message (a message with any behavior or BCT).
|
Weighing Message: Received
n=17079 Observations
All observations in which weighing was the assigned behavior and microrandomization resulted in receiving the message (with any BCT).
|
Weighing Message: Not Received
n=16924 Observations
All observations in which weighing was the assigned behavior and microrandomization resulted in not receiving the message (with any BCT).
|
Weighing BCT 1 Message (Action Planning): Received
n=2823 Observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 1 Message (Action Planning): Not Received
n=2883 Observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Received
n=1482 Observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Not Received
n=190 Participants
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Received
n=206 Participants
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Not Received
n=205 Participants
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 4 Message (Social Support): Received
n=206 Participants
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 4 Message (Social Support): Not Received
n=206 Participants
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Received
n=206 Participants
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Not Received
n=205 Participants
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 6 Message (Social Reward): Received
n=195 Participants
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 6 (Social Reward) Message: Not Received
n=197 Participants
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Received
n=203 Participants
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Not Received
n=203 Participants
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in not receiving the message.
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Met Daily Weighing Goal Tomorrow
|
29985 goals met
|
29969 goals met
|
10022 goals met
|
9959 goals met
|
1637 goals met
|
1682 goals met
|
487 goals met
|
461 goals met
|
1751 goals met
|
1723 goals met
|
1781 goals met
|
1744 goals met
|
1581 goals met
|
1527 goals met
|
1189 goals met
|
1246 goals met
|
1596 goals met
|
1576 goals met
|
SECONDARY outcome
Timeframe: Daily throughout the study, a total of up to 24 weeksPopulation: The number of observations analyzed in each arm reflects the total number of observations (across participants, across the study) in which a message of that type was either received or not received, as noted in the arm description. The number of participants analyzed is the total number of participants whose observations are included in that particular arm.
Each observation corresponds to a microrandomization decision point; the reported value reflects the outcome measured within that unit. Among the randomization observations, this outcome is the number of observations in which the daily active minutes goal was met the day following randomization. Observations are accumulated across participants and across time. On the day following randomization, a dichotomous outcome of whether a participant met or did not meet their active minutes goal is calculated.
Outcome measures
| Measure |
Any Message: Received
n=50986 Observations
All observations in which microrandomization resulted in receiving the message (a message with any behavior or BCT).
|
Any Message: Not Received
n=51019 Observations
All observations in which microrandomization resulted in not receiving the message (a message with any behavior or BCT).
|
Weighing Message: Received
n=16986 Observations
All observations in which weighing was the assigned behavior and microrandomization resulted in receiving the message (with any BCT).
|
Weighing Message: Not Received
n=17003 Observations
All observations in which weighing was the assigned behavior and microrandomization resulted in not receiving the message (with any BCT).
|
Weighing BCT 1 Message (Action Planning): Received
n=2747 Observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 1 Message (Action Planning): Not Received
n=2624 Observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Received
n=2547 Observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Not Received
n=2699 Observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Received
n=2614 Observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Not Received
n=2644 Observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 4 Message (Social Support): Received
n=2639 Observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 4 Message (Social Support): Not Received
n=2649 Observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Received
n=2529 Observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Not Received
n=2517 Observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 6 Message (Social Reward): Received
n=1507 Observations
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 6 (Social Reward) Message: Not Received
n=1519 Observations
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Received
n=2403 Observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Not Received
n=2351 Observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in not receiving the message.
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Met Daily Active Minutes Goal Tomorrow
|
13415 goals met
|
13472 goals met
|
4452 goals met
|
4501 goals met
|
709 goals met
|
670 goals met
|
650 goals met
|
639 goals met
|
647 goals met
|
718 goals met
|
701 goals met
|
722 goals met
|
617 goals met
|
601 goals met
|
505 goals met
|
509 goals met
|
623 goals met
|
642 goals met
|
SECONDARY outcome
Timeframe: Daily throughout the study, a total of up to 24 weeksPopulation: The number of observations analyzed in each arm reflects the total number of observations (across participants, across the study) in which a message of that type was either received or not received, as noted in the arm description. The number of participants analyzed is the total number of participants whose observations are included in that particular arm.
Each observation corresponds to a microrandomization decision point; the reported value reflects the outcome measured within that unit. Among the randomization observations, this outcome is the number of observations in which the participant stayed at or under the daily red foods limit the day following randomization. Observations are accumulated across participants and across time. On the day following randomization, a dichotomous outcome of whether a participant stayed at or under the daily red foods limit is calculated.
Outcome measures
| Measure |
Any Message: Received
n=50986 Observations
All observations in which microrandomization resulted in receiving the message (a message with any behavior or BCT).
|
Any Message: Not Received
n=51019 Observations
All observations in which microrandomization resulted in not receiving the message (a message with any behavior or BCT).
|
Weighing Message: Received
n=16921 Observations
All observations in which weighing was the assigned behavior and microrandomization resulted in receiving the message (with any BCT).
|
Weighing Message: Not Received
n=17092 Observations
All observations in which weighing was the assigned behavior and microrandomization resulted in not receiving the message (with any BCT).
|
Weighing BCT 1 Message (Action Planning): Received
n=2846 Observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 1 Message (Action Planning): Not Received
n=2868 Observations
All observations in which weighing was the assigned behavior, Action Planning was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Received
n=2789 Observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 2 Message (Discrepancy): Not Received
n=2826 Observations
All observations in which weighing was the assigned behavior, Discrepancy was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Received
n=2815 Observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 3 Message (Feedback on Outcome of Behavior): Not Received
n=2852 Observations
All observations in which weighing was the assigned behavior, Feedback on Outcome of Behavior was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 4 Message (Social Support): Received
n=2923 Observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 4 Message (Social Support): Not Received
n=2848 Observations
All observations in which weighing was the assigned behavior, Social Support was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Received
n=2715 Observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 5 Message (Social Comparison): Not Received
n=2706 Observations
All observations in which weighing was the assigned behavior, Social Comparison was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 6 Message (Social Reward): Received
n=482 Observations
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 6 (Social Reward) Message: Not Received
n=472 Observations
All observations in which weighing was the assigned behavior, Social Reward was the selected BCT type, and microrandomization resulted in not receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Received
n=2351 Observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in receiving the message.
|
Weighing BCT 7 Message (Focus on Past Success): Not Received
n=2520 Observations
All observations in which weighing was the assigned behavior, Focus on Past Success was the selected BCT type, and microrandomization resulted in not receiving the message.
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
At or Under Daily Red Foods Limit Tomorrow
|
12875 goals met
|
12793 goals met
|
4245 goals met
|
4312 goals met
|
680 goals met
|
674 goals met
|
703 goals met
|
688 goals met
|
700 goals met
|
709 goals met
|
726 goals met
|
697 goals met
|
606 goals met
|
672 goals met
|
207 goals met
|
196 goals met
|
623 goals met
|
676 goals met
|
Adverse Events
Core Behavioral Weight Loss (BWL) Intervention
Serious events: 0 serious events
Other events: 12 other events
Deaths: 0 deaths
Serious adverse events
Adverse event data not reported
Other adverse events
| Measure |
Core Behavioral Weight Loss (BWL) Intervention
n=206 participants at risk
Behavioral weight loss core intervention, includes activity tracker, wireless scale, daily self-weighing, and smartphone app with weekly behavioral lessons, food tracking log, weekly tailored feedback summary, and daily weight-related behavioral goals. Core intervention component is combined with each of the 7 intervention messages to be tested repeatedly over time.
|
|---|---|
|
Injury, poisoning and procedural complications
Ankle sprain
|
1.9%
4/206 • up to 6 months
|
|
Musculoskeletal and connective tissue disorders
Muscle strain
|
3.9%
8/206 • up to 6 months
|
Additional Information
Brooke Nezami, PhD
University of North Carolina at Chapel Hill
Phone: 919-966-5852
Email: [email protected]
Results disclosure agreements
- Principal investigator is a sponsor employee
- Publication restrictions are in place