Trial Outcomes & Findings for Revolutionizing Normative Re-education (NCT NCT04356261)
NCT ID: NCT04356261
Last Updated: 2026-05-01
Results Overview
The Daily Drinking Questionnaire assessess the number of drinks consumed per week in a typical week over the past three months.
COMPLETED
NA
1143 participants
baseline, 4 months
2026-05-01
Participant Flow
Participants were randomized to study condition follow-up the baseline survey (Started) and prior to any follow-up survey (Waves 2-4). Waves represent when follow-up surveys were collected (number of months post baseline). Follow-up surveys were collected 4-, 9-, and 12-months post baseline.
Participant milestones
| Measure |
Control PNF
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Overall Study
STARTED
|
388
|
374
|
381
|
|
Overall Study
Wave 2
|
311
|
290
|
294
|
|
Overall Study
Wave 3
|
301
|
291
|
291
|
|
Overall Study
Wave 4
|
295
|
283
|
290
|
|
Overall Study
COMPLETED
|
388
|
374
|
381
|
|
Overall Study
NOT COMPLETED
|
0
|
0
|
0
|
Reasons for withdrawal
Withdrawal data not reported
Baseline Characteristics
Six participants did not complete the baseline measure of drinks per week.
Baseline characteristics by cohort
| Measure |
Control PNF
n=388 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=374 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=381 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
Total
n=1143 Participants
Total of all reporting groups
|
|---|---|---|---|---|
|
Age, Continuous
|
18.40 Years
STANDARD_DEVIATION .62 • n=388 Participants
|
18.41 Years
STANDARD_DEVIATION .64 • n=374 Participants
|
18.37 Years
STANDARD_DEVIATION .59 • n=381 Participants
|
18.39 Years
STANDARD_DEVIATION .62 • n=1143 Participants
|
|
Sex: Female, Male
Female
|
248 Participants
n=388 Participants
|
243 Participants
n=374 Participants
|
247 Participants
n=381 Participants
|
738 Participants
n=1143 Participants
|
|
Sex: Female, Male
Male
|
140 Participants
n=388 Participants
|
131 Participants
n=374 Participants
|
134 Participants
n=381 Participants
|
405 Participants
n=1143 Participants
|
|
Race (NIH/OMB)
American Indian or Alaska Native
|
8 Participants
n=388 Participants
|
6 Participants
n=374 Participants
|
7 Participants
n=381 Participants
|
21 Participants
n=1143 Participants
|
|
Race (NIH/OMB)
Asian
|
105 Participants
n=388 Participants
|
109 Participants
n=374 Participants
|
104 Participants
n=381 Participants
|
318 Participants
n=1143 Participants
|
|
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
|
0 Participants
n=388 Participants
|
1 Participants
n=374 Participants
|
0 Participants
n=381 Participants
|
1 Participants
n=1143 Participants
|
|
Race (NIH/OMB)
Black or African American
|
47 Participants
n=388 Participants
|
44 Participants
n=374 Participants
|
46 Participants
n=381 Participants
|
137 Participants
n=1143 Participants
|
|
Race (NIH/OMB)
White
|
181 Participants
n=388 Participants
|
165 Participants
n=374 Participants
|
168 Participants
n=381 Participants
|
514 Participants
n=1143 Participants
|
|
Race (NIH/OMB)
More than one race
|
44 Participants
n=388 Participants
|
45 Participants
n=374 Participants
|
54 Participants
n=381 Participants
|
143 Participants
n=1143 Participants
|
|
Race (NIH/OMB)
Unknown or Not Reported
|
3 Participants
n=388 Participants
|
4 Participants
n=374 Participants
|
2 Participants
n=381 Participants
|
9 Participants
n=1143 Participants
|
|
Ethnicity (NIH/OMB)
Hispanic or Latino
|
130 Participants
n=388 Participants
|
110 Participants
n=374 Participants
|
117 Participants
n=381 Participants
|
357 Participants
n=1143 Participants
|
|
Ethnicity (NIH/OMB)
Not Hispanic or Latino
|
258 Participants
n=388 Participants
|
264 Participants
n=374 Participants
|
264 Participants
n=381 Participants
|
786 Participants
n=1143 Participants
|
|
Ethnicity (NIH/OMB)
Unknown or Not Reported
|
0 Participants
n=388 Participants
|
0 Participants
n=374 Participants
|
0 Participants
n=381 Participants
|
0 Participants
n=1143 Participants
|
|
Drinks per week
|
1.97 Number of alcoholic drinks per week
STANDARD_DEVIATION 5.99 • n=386 Participants • Six participants did not complete the baseline measure of drinks per week.
|
1.86 Number of alcoholic drinks per week
STANDARD_DEVIATION 4.45 • n=372 Participants • Six participants did not complete the baseline measure of drinks per week.
|
1.64 Number of alcoholic drinks per week
STANDARD_DEVIATION 3.87 • n=379 Participants • Six participants did not complete the baseline measure of drinks per week.
|
1.82 Number of alcoholic drinks per week
STANDARD_DEVIATION 4.86 • n=1137 Participants • Six participants did not complete the baseline measure of drinks per week.
|
|
Peak drinks
|
1.50 number of alcoholic drinks
STANDARD_DEVIATION 3.00 • n=386 Participants • 7 participants did not complete the assessment of peak drinks.
|
1.53 number of alcoholic drinks
STANDARD_DEVIATION 3.01 • n=371 Participants • 7 participants did not complete the assessment of peak drinks.
|
1.43 number of alcoholic drinks
STANDARD_DEVIATION 2.65 • n=379 Participants • 7 participants did not complete the assessment of peak drinks.
|
1.49 number of alcoholic drinks
STANDARD_DEVIATION 2.89 • n=1136 Participants • 7 participants did not complete the assessment of peak drinks.
|
|
Alcohol Problems
|
2.09 scores on a scale
STANDARD_DEVIATION 3.60 • n=386 Participants • 7 participants did not complete the assessment of alcohol problems.
|
1.88 scores on a scale
STANDARD_DEVIATION 3.55 • n=372 Participants • 7 participants did not complete the assessment of alcohol problems.
|
1.58 scores on a scale
STANDARD_DEVIATION 2.84 • n=378 Participants • 7 participants did not complete the assessment of alcohol problems.
|
1.85 scores on a scale
STANDARD_DEVIATION 3.35 • n=1136 Participants • 7 participants did not complete the assessment of alcohol problems.
|
|
Perceived descriptive norm for peak drinks
|
5.55 drinks/occasion
STANDARD_DEVIATION 4.85 • n=373 Participants • 31 participants either did not complete the item (n=25) or did not provide meaningful responses (n=6).
|
5.46 drinks/occasion
STANDARD_DEVIATION 4.87 • n=365 Participants • 31 participants either did not complete the item (n=25) or did not provide meaningful responses (n=6).
|
5.60 drinks/occasion
STANDARD_DEVIATION 5.13 • n=374 Participants • 31 participants either did not complete the item (n=25) or did not provide meaningful responses (n=6).
|
5.54 drinks/occasion
STANDARD_DEVIATION 4.95 • n=1112 Participants • 31 participants either did not complete the item (n=25) or did not provide meaningful responses (n=6).
|
|
Perceived descriptive norms for drinks per week
|
7.09 drinks/week
STANDARD_DEVIATION 8.60 • n=386 Participants • 6 participants did not complete the assessment of perceived descriptive norms for drinks per week.
|
6.66 drinks/week
STANDARD_DEVIATION 7.59 • n=373 Participants • 6 participants did not complete the assessment of perceived descriptive norms for drinks per week.
|
6.40 drinks/week
STANDARD_DEVIATION 7.62 • n=378 Participants • 6 participants did not complete the assessment of perceived descriptive norms for drinks per week.
|
6.72 drinks/week
STANDARD_DEVIATION 7.95 • n=1137 Participants • 6 participants did not complete the assessment of perceived descriptive norms for drinks per week.
|
|
Perceived injunctive drinking norms
|
4.24 units on a scale
STANDARD_DEVIATION 1.07 • n=387 Participants • Three participants did not complete this assessment.
|
4.23 units on a scale
STANDARD_DEVIATION 1.13 • n=374 Participants • Three participants did not complete this assessment.
|
4.15 units on a scale
STANDARD_DEVIATION 1.14 • n=379 Participants • Three participants did not complete this assessment.
|
4.21 units on a scale
STANDARD_DEVIATION 1.12 • n=1140 Participants • Three participants did not complete this assessment.
|
PRIMARY outcome
Timeframe: baseline, 4 monthsPopulation: Descriptive statistics reflect all 893 participants who completed the 4-month follow-up assessment (293 Control, 289 Light Dose, 311 Heavy Dose). Regression analyses included participants with complete data on all covariates. Sample sizes in regression models varied slightly across outcomes due to missing covariate data (approximately 889 participants total across most analyses).
The Daily Drinking Questionnaire assessess the number of drinks consumed per week in a typical week over the past three months.
Outcome measures
| Measure |
Control PNF
n=293 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=289 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=311 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Daily Drinking at 4 Months
|
2.11 Drinks per week
Standard Deviation 4.97
|
1.79 Drinks per week
Standard Deviation 5.84
|
2.18 Drinks per week
Standard Deviation 4.81
|
PRIMARY outcome
Timeframe: baseline, 9 monthsPopulation: Descriptive statistics reflect all 881 participants who completed the 9-month follow-up assessment (290 Control, 290 Light Dose, 301 Heavy Dose). Regression analyses included participants with complete data on all covariates. Sample sizes in regression models varied slightly across outcomes due to missing covariate data (approximately 877 participants total across most analyses).
The Daily Drinking Questionnaire assesses the number of drinks consumed per week in a typical week over the past three months.
Outcome measures
| Measure |
Control PNF
n=290 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=290 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=301 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Daily Drinking at 9 Months
|
1.85 Drinks per week
Standard Deviation 4.15
|
1.67 Drinks per week
Standard Deviation 3.59
|
2.05 Drinks per week
Standard Deviation 4.75
|
PRIMARY outcome
Timeframe: baseline, 12 monthsPopulation: Descriptive statistics reflect all 866 participants who completed the 12-month follow-up assessment (289 Control, 282 Light Dose, 295 Heavy Dose). Regression analyses included participants with complete data on all covariates. Sample sizes in regression models varied slightly across outcomes due to missing covariate data (861 participants total for this analysis).
Assesses number of drinks consumed during an average week over the past month
Outcome measures
| Measure |
Control PNF
n=289 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=282 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=295 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Daily Drinking at 12 Months
|
2.16 Drinks per week
Standard Deviation 4.74
|
2.31 Drinks per week
Standard Deviation 4.76
|
2.00 Drinks per week
Standard Deviation 3.72
|
PRIMARY outcome
Timeframe: baseline, 4 monthsPopulation: Descriptive statistics reflect all 896 participants who completed the 4-month follow-up assessment (294 Control, 290 Light Dose, 312 Heavy Dose). Regression analyses included participants with complete data on all covariates. Sample sizes in regression models varied slightly across outcomes due to missing covariate data (891 participants total for this analysis).
Young Adult Alcohol Consequences Questionnaire (YAACQ; Read et al., 2006) was used to assess alcohol-related negative consequences in the past month. Participants indicate whether or not they experienced each of 48 alcohol-related negative consequences in the past month (0 = no, 1 = yes). Items are summed to yield a total score reflecting the number of alcohol-related problems experienced. Scores range from 0 to 48, where higher scores indicate a greater number of alcohol-related negative consequences (worse outcome).
Outcome measures
| Measure |
Control PNF
n=294 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=290 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=312 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Alcohol Consequences at 4 Months
|
2.06 scores on a scale
Standard Deviation 3.65
|
2.02 scores on a scale
Standard Deviation 4.10
|
1.85 scores on a scale
Standard Deviation 3.49
|
PRIMARY outcome
Timeframe: baseline, 9 monthsPopulation: Descriptive statistics reflect all 890 participants who completed the 9-month follow-up assessment (295 Control, 291 Light Dose, 304 Heavy Dose). Regression analyses included participants with complete data on all covariates. Sample sizes in regression models varied slightly across outcomes due to missing covariate data (884 participants total for this analysis).
Young Adult Alcohol Consequences Questionnaire (YAACQ; Read et al., 2006) was used to assess alcohol-related negative consequences in the past month. Participants indicate whether or not they experienced each of 48 alcohol-related negative consequences in the past month (0 = no, 1 = yes). Items are summed to yield a total score reflecting the number of alcohol-related problems experienced. Scores range from 0 to 48, where higher scores indicate a greater number of alcohol-related negative consequences (worse outcome).
Outcome measures
| Measure |
Control PNF
n=295 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=291 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=304 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Alcohol Consequences at 9 Months
|
1.95 scores on a scale
Standard Deviation 3.44
|
2.24 scores on a scale
Standard Deviation 4.01
|
2.29 scores on a scale
Standard Deviation 4.10
|
PRIMARY outcome
Timeframe: baseline, 12 monthsPopulation: Descriptive statistics reflect all 870 participants who completed the 12-month follow-up assessment (292 Control, 283 Light Dose, 295 Heavy Dose). Regression analyses included participants with complete data on all covariates. Sample sizes in regression models varied slightly across outcomes due to missing covariate data (865 participants total for this analysis).
Young Adult Alcohol Consequences Questionnaire (YAACQ; Read et al., 2006) was used to assess alcohol-related negative consequences in the past month. Participants indicate whether or not they experienced each of 48 alcohol-related negative consequences in the past month (0 = no, 1 = yes). Items are summed to yield a total score reflecting the number of alcohol-related problems experienced. Scores range from 0 to 48, where higher scores indicate a greater number of alcohol-related negative consequences (worse outcome).
Outcome measures
| Measure |
Control PNF
n=292 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=283 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=295 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Alcohol Consequences at 12 Months
|
2.32 scores on a scale
Standard Deviation 4.08
|
2.32 scores on a scale
Standard Deviation 3.72
|
2.17 scores on a scale
Standard Deviation 3.97
|
PRIMARY outcome
Timeframe: baseline, 4 monthsPopulation: Descriptive statistics reflect all 896 participants who completed the 4-month follow-up assessment (294 Control, 290 Light Dose, 312 Heavy Dose). Regression analyses included participants with complete data on all covariates. Sample sizes in regression models varied slightly across outcomes due to missing covariate data (892 participants total for this analysis).
We used the Quantity/Frequency/Peak Alcohol measure to assess peak drinks. Participants reported the largest number of drinks they consumed on one occasion in the past 30 days.
Outcome measures
| Measure |
Control PNF
n=294 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=290 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=312 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Quantity/Frequency/Peak Alcohol Use at 4 Months
|
1.86 Peak number of drinks
Standard Deviation 3.27
|
1.53 Peak number of drinks
Standard Deviation 2.86
|
1.95 Peak number of drinks
Standard Deviation 3.41
|
PRIMARY outcome
Timeframe: baseline, 9 monthsAssesses frequency and quantity of alcohol consumption over the past month
Outcome measures
| Measure |
Control PNF
n=291 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=290 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=302 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Quantity/Frequency/Peak Alcohol Use at 9 Months
|
1.98 Peak number of drinks
Standard Deviation 3.52
|
1.94 Peak number of drinks
Standard Deviation 3.31
|
2.09 Peak number of drinks
Standard Deviation 3.67
|
PRIMARY outcome
Timeframe: baseline, 12 monthsAssesses frequency and quantity of alcohol consumption over the past month
Outcome measures
| Measure |
Control PNF
n=292 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=282 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=295 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Quantity/Frequency/Peak Alcohol Use at 12 Months
|
1.88 Peak number of drinks
Standard Deviation 3.00
|
2.10 Peak number of drinks
Standard Deviation 3.35
|
1.90 Peak number of drinks
Standard Deviation 3.01
|
SECONDARY outcome
Timeframe: baseline, 4 monthsPopulation: Descriptive statistics reflect all 900 participants who completed the 4-month follow-up assessment (295 Control, 294 Light Dose, 311 Heavy Dose). Regression analyses included participants with complete data on all covariates. Sample sizes in regression models varied slightly across outcomes due to missing covariate data (896 participants total for this analysis).
Assesses perceptions of weekly alcohol consumption among peers over the past month
Outcome measures
| Measure |
Control PNF
n=295 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=294 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=311 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Descriptive Peer Drinking Norms- Drinking Norms Rating Form at 4 Months
|
7.00 Drinks per week (descriptive norm)
Standard Deviation 8.25
|
5.75 Drinks per week (descriptive norm)
Standard Deviation 6.87
|
5.76 Drinks per week (descriptive norm)
Standard Deviation 6.32
|
SECONDARY outcome
Timeframe: baseline, 9 monthsPopulation: Descriptive statistics reflect all 891 participants who completed the 9-month follow-up assessment (297 Control, 290 Light Dose, 304 Heavy Dose). Regression analyses included participants with complete data on all covariates. Sample sizes in regression models varied slightly across outcomes due to missing covariate data (888 participants total for this analysis).
Assesses perceptions of weekly alcohol consumption among peers over the past month
Outcome measures
| Measure |
Control PNF
n=297 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=290 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=304 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Descriptive Peer Drinking Norms- Drinking Norms Rating Form at 9 Months
|
5.47 Drinks per week (descriptive norm)
Standard Deviation 7.27
|
5.45 Drinks per week (descriptive norm)
Standard Deviation 6.67
|
5.36 Drinks per week (descriptive norm)
Standard Deviation 6.84
|
SECONDARY outcome
Timeframe: baseline, 12 monthsPopulation: Descriptive statistics reflect all 867 participants who completed the 12-month follow-up assessment (290 Control, 282 Light Dose, 295 Heavy Dose). Regression analyses included participants with complete data on all covariates. Sample sizes in regression models varied slightly across outcomes due to missing covariate data (862 participants total for this analysis).
Assesses perceptions of weekly alcohol consumption among peers over the past month
Outcome measures
| Measure |
Control PNF
n=290 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=282 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=295 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Descriptive Peer Drinking Norms- Drinking Norms Rating Form at 12 Months
|
6.91 Drinks per week (descriptive norm)
Standard Deviation 9.06
|
6.08 Drinks per week (descriptive norm)
Standard Deviation 6.58
|
5.65 Drinks per week (descriptive norm)
Standard Deviation 6.37
|
SECONDARY outcome
Timeframe: baseline, 4 monthsAssesses perceptions of peers' frequency and quantity of drinking over the past month
Outcome measures
| Measure |
Control PNF
n=296 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=295 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=312 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Descriptive Peer Drinking Norms- Modified Quantity, Frequency, Peak Index at 4 Months
|
5.12 Peak number of drinks (descriptive norm)
Standard Deviation 3.60
|
4.49 Peak number of drinks (descriptive norm)
Standard Deviation 3.14
|
4.86 Peak number of drinks (descriptive norm)
Standard Deviation 4.14
|
SECONDARY outcome
Timeframe: baseline, 9 monthsPopulation: Descriptive statistics reflect all 889 participants who completed the 9-month follow-up assessment (296 Control, 290 Light Dose, 303 Heavy Dose). Regression analyses included participants with complete data on all covariates. Sample sizes in regression models varied slightly across outcomes due to missing covariate data (870 participants total for this analysis).
Assesses perceptions of peers' frequency and quantity of drinking over the past month
Outcome measures
| Measure |
Control PNF
n=296 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=290 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=303 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Descriptive Peer Drinking Norms- Modified Quantity, Frequency, Peak Index at 9 Months
|
4.86 Peak number of drinks (descriptive norm)
Standard Deviation 3.59
|
5.24 Peak number of drinks (descriptive norm)
Standard Deviation 3.63
|
4.52 Peak number of drinks (descriptive norm)
Standard Deviation 3.42
|
SECONDARY outcome
Timeframe: baseline, 12 monthsAssesses perceptions of peers' frequency and quantity of drinking over the past month
Outcome measures
| Measure |
Control PNF
n=292 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=282 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=295 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Descriptive Peer Drinking Norms- Modified Quantity, Frequency, Peak Index at 12 Months
|
5.41 Peak number of drinks (descriptive norm)
Standard Deviation 3.52
|
4.92 Peak number of drinks (descriptive norm)
Standard Deviation 3.70
|
4.98 Peak number of drinks (descriptive norm)
Standard Deviation 3.69
|
SECONDARY outcome
Timeframe: baseline, 4 monthsPerceived Injunctive Norms scale was used to assess participants' estimates of how acceptable other same-sex students at their university find each of 15 drinking behaviors (e.g., drinking to get drunk, drinking alone, driving after drinking). Participants rate the acceptability of each behavior on a scale from 1 (completely unacceptable) to 7 (completely acceptable). Ratings are averaged across all 15 items to yield a total score ranging from 1 to 7, where higher scores indicate greater perceived peer approval of drinking behaviors.
Outcome measures
| Measure |
Control PNF
n=295 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=294 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=312 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Injunctive Peer Drinking Norms (Adapted From Baer, 1994) at 4 Months
|
4.18 scores on a scale
Standard Deviation 1.09
|
4.16 scores on a scale
Standard Deviation 1.01
|
4.01 scores on a scale
Standard Deviation 1.13
|
SECONDARY outcome
Timeframe: baseline, 9 monthsPerceived Injunctive Norms scale was used to assess participants' estimates of how acceptable other same-sex students at their university find each of 15 drinking behaviors (e.g., drinking to get drunk, drinking alone, driving after drinking). Participants rate the acceptability of each behavior on a scale from 1 (completely unacceptable) to 7 (completely acceptable). Ratings are averaged across all 15 items to yield a total score ranging from 1 to 7, where higher scores indicate greater perceived peer approval of drinking behaviors.
Outcome measures
| Measure |
Control PNF
n=297 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=292 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=304 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Injunctive Peer Drinking Norms (Adapted From Baer, 1994) at 9 Months
|
4.25 scores on a scale
Standard Deviation 1.03
|
4.27 scores on a scale
Standard Deviation 0.93
|
4.07 scores on a scale
Standard Deviation 1.05
|
SECONDARY outcome
Timeframe: baseline, 12 monthsPerceived Injunctive Norms scale was used to assess participants' estimates of how acceptable other same-sex students at their university find each of 15 drinking behaviors (e.g., drinking to get drunk, drinking alone, driving after drinking). Participants rate the acceptability of each behavior on a scale from 1 (completely unacceptable) to 7 (completely acceptable). Ratings are averaged across all 15 items to yield a total score ranging from 1 to 7, where higher scores indicate greater perceived peer approval of drinking behaviors; group-level data are summarized using the Mean (Measure Type) and SD (Dispersion Type).
Outcome measures
| Measure |
Control PNF
n=291 Participants
Personalized Normative Feedback on non-alcohol/health related topics delivered in all weekly rounds (active control)
|
Light Dose of Alcohol PNF
n=283 Participants
Personalized Normative Feedback on Alcohol Use delivered in 33% of weekly rounds
|
Heavy Dose of Alcohol PNF
n=295 Participants
Personalized Normative Feedback on Alcohol Use delivered in 67% of weekly rounds
|
|---|---|---|---|
|
Change From Baseline Injunctive Peer Drinking Norms (Adapted From Baer, 1994) at 12 Months
|
4.31 scores on a scale
Standard Deviation 0.98
|
4.28 scores on a scale
Standard Deviation 0.94
|
4.12 scores on a scale
Standard Deviation 1.01
|
Adverse Events
Control PNF
Light Dose of Alcohol PNF
Heavy Dose of Alcohol PNF
Serious adverse events
Adverse event data not reported
Other adverse events
Adverse event data not reported
Additional Information
Results disclosure agreements
- Principal investigator is a sponsor employee
- Publication restrictions are in place