Trial Outcomes & Findings for Alcohol Feedback, Reflection and Morning Evaluation (NCT NCT05509218)

NCT ID: NCT05509218

Last Updated: 2026-06-16

Results Overview

drinks per week in the past 30 days

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

152 participants

Primary outcome timeframe

post-test (1 month following baseline; end of intervention period for those in intervention groups)

Results posted on

2026-06-16

Participant Flow

Participants were recruited via social media advertisements, outreach to participants from prior studies with documented interest in future studies, and a university listserv. Recruitment occurred between August 2024 and June 2025.

Participant milestones

Participant milestones
Measure
Personalized Feedback Plus Incentive
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will receive $1 per day for submitting their daily survey.
Personalized Feedback Without Incentive
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will NOT receive $1 per day for submitting their daily survey.
Control
Participants in this arm will only complete baseline and follow-up surveys.
Overall Study
STARTED
54
52
46
Overall Study
COMPLETED
54
49
46
Overall Study
NOT COMPLETED
0
3
0

Reasons for withdrawal

Reasons for withdrawal
Measure
Personalized Feedback Plus Incentive
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will receive $1 per day for submitting their daily survey.
Personalized Feedback Without Incentive
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will NOT receive $1 per day for submitting their daily survey.
Control
Participants in this arm will only complete baseline and follow-up surveys.
Overall Study
3 withdrawn from no incentives group due to ineligibility becoming clear after enrollment
0
3
0

Baseline Characteristics

Alcohol Feedback, Reflection and Morning Evaluation

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Personalized Feedback Plus Incentive
n=54 Participants
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will receive $1 per day for submitting their daily survey.
Personalized Feedback Without Incentive
n=49 Participants
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will NOT receive $1 per day for submitting their daily survey.
Control
n=46 Participants
Participants in this arm will only complete baseline and follow-up surveys.
Total
n=149 Participants
Total of all reporting groups
Sex: Female, Male
Male
22 Participants
n=20 Participants
20 Participants
n=20 Participants
27 Participants
n=40 Participants
69 Participants
n=6 Participants
Age, Continuous
23.28 Years
STANDARD_DEVIATION 2.92 • n=20 Participants
23.86 Years
STANDARD_DEVIATION 3.29 • n=20 Participants
23.22 Years
STANDARD_DEVIATION 2.72 • n=40 Participants
23.45 Years
STANDARD_DEVIATION 2.98 • n=6 Participants
Sex: Female, Male
Female
32 Participants
n=20 Participants
29 Participants
n=20 Participants
19 Participants
n=40 Participants
80 Participants
n=6 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=20 Participants
0 Participants
n=20 Participants
0 Participants
n=40 Participants
0 Participants
n=6 Participants
Race (NIH/OMB)
Asian
12 Participants
n=20 Participants
7 Participants
n=20 Participants
8 Participants
n=40 Participants
27 Participants
n=6 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=20 Participants
0 Participants
n=20 Participants
0 Participants
n=40 Participants
0 Participants
n=6 Participants
Race (NIH/OMB)
Black or African American
4 Participants
n=20 Participants
2 Participants
n=20 Participants
4 Participants
n=40 Participants
10 Participants
n=6 Participants
Race (NIH/OMB)
White
32 Participants
n=20 Participants
34 Participants
n=20 Participants
30 Participants
n=40 Participants
96 Participants
n=6 Participants
Race (NIH/OMB)
More than one race
4 Participants
n=20 Participants
5 Participants
n=20 Participants
4 Participants
n=40 Participants
13 Participants
n=6 Participants
Race (NIH/OMB)
Unknown or Not Reported
2 Participants
n=20 Participants
1 Participants
n=20 Participants
0 Participants
n=40 Participants
3 Participants
n=6 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
4 Participants
n=20 Participants
8 Participants
n=20 Participants
7 Participants
n=40 Participants
19 Participants
n=6 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
50 Participants
n=20 Participants
41 Participants
n=20 Participants
39 Participants
n=40 Participants
130 Participants
n=6 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=20 Participants
0 Participants
n=20 Participants
0 Participants
n=40 Participants
0 Participants
n=6 Participants
drinks per week
18.47 drinks per week
STANDARD_DEVIATION 13.67 • n=20 Participants
17.22 drinks per week
STANDARD_DEVIATION 11.13 • n=20 Participants
15.24 drinks per week
STANDARD_DEVIATION 10.06 • n=40 Participants
17.06 drinks per week
STANDARD_DEVIATION 11.82 • n=6 Participants
heavy drinking frequency
6.96 days
STANDARD_DEVIATION 5.92 • n=20 Participants
7.06 days
STANDARD_DEVIATION 4.05 • n=20 Participants
6.30 days
STANDARD_DEVIATION 4.86 • n=40 Participants
6.79 days
STANDARD_DEVIATION 5.02 • n=6 Participants
negative consequences
8.52 consequences
STANDARD_DEVIATION 3.89 • n=20 Participants
9.67 consequences
STANDARD_DEVIATION 4.90 • n=20 Participants
7.33 consequences
STANDARD_DEVIATION 3.68 • n=40 Participants
8.53 consequences
STANDARD_DEVIATION 4.27 • n=6 Participants

PRIMARY outcome

Timeframe: post-test (1 month following baseline; end of intervention period for those in intervention groups)

Population: The number of participants who completed post-test is slightly lower in Groups 1 and 2 than at baseline.

drinks per week in the past 30 days

Outcome measures

Outcome measures
Measure
Personalized Feedback Plus Incentive
n=53 Participants
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will receive $1 per day for submitting their daily survey.
Personalized Feedback Without Incentive
n=45 Participants
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will NOT receive $1 per day for submitting their daily survey.
Control
n=46 Participants
Participants in this arm will only complete baseline and follow-up surveys.
Drinks Per Week Post-test
15.28 drinks per week
Standard Deviation 12.01
12.76 drinks per week
Standard Deviation 10.66
11.48 drinks per week
Standard Deviation 7.93

PRIMARY outcome

Timeframe: post-test (end of 4-week intervention for those in intervention groups, and 1 month after baseline)

Population: Number completing post-test was slightly lower than baseline.

Number of days drinking 4+ drinks (women) or 5+ drinks (men) in the past 30 days

Outcome measures

Outcome measures
Measure
Personalized Feedback Plus Incentive
n=53 Participants
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will receive $1 per day for submitting their daily survey.
Personalized Feedback Without Incentive
n=45 Participants
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will NOT receive $1 per day for submitting their daily survey.
Control
n=46 Participants
Participants in this arm will only complete baseline and follow-up surveys.
Heavy Drinking Frequency Post-test
5.75 number of heavy drinking days
Standard Deviation 5.80
4.91 number of heavy drinking days
Standard Deviation 4.80
4.16 number of heavy drinking days
Standard Deviation 4.57

PRIMARY outcome

Timeframe: post-test (end of 4-week intervention)

Population: Number completing post-test was slightly lower than baseline

Number of consequences reported on the 24-item Brief Young Adult Alcohol Consequences Questionnaire (BYAACQ)

Outcome measures

Outcome measures
Measure
Personalized Feedback Plus Incentive
n=53 Participants
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will receive $1 per day for submitting their daily survey.
Personalized Feedback Without Incentive
n=45 Participants
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will NOT receive $1 per day for submitting their daily survey.
Control
n=46 Participants
Participants in this arm will only complete baseline and follow-up surveys.
Negative Alcohol Consequences Post-test
6.28 negative consequences
Standard Deviation 4.46
6.82 negative consequences
Standard Deviation 4.72
6.11 negative consequences
Standard Deviation 4.55

PRIMARY outcome

Timeframe: 3 month follow-up (4 months following baseline)

Population: Number of participants completing 3 month follow-up was slightly lower than at baseline

drinks per week in the past 30 days

Outcome measures

Outcome measures
Measure
Personalized Feedback Plus Incentive
n=51 Participants
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will receive $1 per day for submitting their daily survey.
Personalized Feedback Without Incentive
n=43 Participants
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will NOT receive $1 per day for submitting their daily survey.
Control
n=45 Participants
Participants in this arm will only complete baseline and follow-up surveys.
Drinks Per Week 3-month Follow-up
11.20 drinks per week
Standard Deviation 9.62
9.85 drinks per week
Standard Deviation 9.15
10.18 drinks per week
Standard Deviation 7.51

PRIMARY outcome

Timeframe: 3 month follow-up (4 months post-baseline)

Population: Number completing post-test was slightly lower than baseline.

Number of days drinking 4+ drinks (women) or 5+ drinks (men) in the past 30 days

Outcome measures

Outcome measures
Measure
Personalized Feedback Plus Incentive
n=51 Participants
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will receive $1 per day for submitting their daily survey.
Personalized Feedback Without Incentive
n=43 Participants
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will NOT receive $1 per day for submitting their daily survey.
Control
n=45 Participants
Participants in this arm will only complete baseline and follow-up surveys.
Heavy Drinking Frequency 3-month Follow-up
3.78 number of heavy drinking days
Standard Deviation 4.26
3.80 number of heavy drinking days
Standard Deviation 4.11
4.02 number of heavy drinking days
Standard Deviation 4.00

PRIMARY outcome

Timeframe: 3-month follow-up (3 months after end of intervention; 4 months after baseline

Population: Number completing 3-month follow-up was slightly lower than baseline

Number of consequences reported on the 24-item Brief Young Adult Alcohol Consequences Questionnaire (BYAACQ)

Outcome measures

Outcome measures
Measure
Personalized Feedback Plus Incentive
n=51 Participants
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will receive $1 per day for submitting their daily survey.
Personalized Feedback Without Incentive
n=43 Participants
Following each daily survey on which a participant indicates prior day drinking, personalized feedback will be provided. Participants in this group will NOT receive $1 per day for submitting their daily survey.
Control
n=45 Participants
Participants in this arm will only complete baseline and follow-up surveys.
Negative Alcohol Consequences 3-month Follow-up
6.49 negative consequences
Standard Deviation 5.42
4.91 negative consequences
Standard Deviation 4.47
5.33 negative consequences
Standard Deviation 4.65

Adverse Events

Personalized Feedback Plus Incentive

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

Personalized Feedback Without Incentive

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

Control

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

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

Jennifer Merrill

Brown University

Phone: 401-863-5165

Results disclosure agreements

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