Wood 2010.

Methods	Design: RCT Follow‐up: 10, 22 months Attrition: 16%
Participants	Mean age (years): 18.4 Sex: 57% female N participants: 1014 Allocation: n = 253 BMI; n = 256 PBI; n = 249 PBI + BMI; n = 256 control Setting: university; all students Country: USA
Interventions	Programme type:  brief motivational interviewing Set up: 2 individual sessions plus booster session Key components: questions on alcohol use, consequences, and socioenvironmental influences on college drinking Duration: initial BMI lasted approximately 45–60 min; booster session lasted 20–30 min Control: assessment only
Outcomes	Outcomes: the number of times in the last month that students had consumed 5 or more drinks (4 or more for women) in a row; alcohol consequences Measures: Young Adult Alcohol Problems Screening Test
Funding and Declared Conflicts of Interest	Funded by NIDA. No information or declarations about potential conflicts of interest
Notes	Study results not in right format for MA; authors contacted
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Insufficient information to make a judgement
Allocation concealment (selection bias)	Unclear risk	Insufficient information to make a judgement
Incomplete outcome data (attrition bias) All outcomes	Low risk	Low attrition (16%). Full‐information maximum likelihood estimation with robust standard error estimation, which assumes data are missing at random, was used in both Parts 1 and 2
Selective reporting (reporting bias)	Low risk	All prespecified outcomes were reported
Blinding of participants and personnel (performance bias) All outcomes	High risk	Not possible to blind participants to intervention. Insufficient information to make a judgement about blinding of therapists
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Interviewers were not members of the research team, were blind to experimental condition
Unit of Analysis issues	Low risk	Not applicable

AAMC: Association of American Medical Colleges; BAC: blood alcohol concentration; BMI: brief motivational interviewing; CDC: Centers for Disease Control and Prevention; COI: conflict of interest; CS: counselling service; DSM IV: Diagnostic and Statistical Manual of Mental Disorders, 4th edition; DUI: driving under the influence; ER: emergency room; HED: heavy episodic drinkers; ICC: inter‐cluster correlation; ITT: intention‐to‐treat; LMC: lifestyle management class; MA: meta‐analysis; MCMC: Markov chain Monte Carlo; MET: motivational enhancement therapy; MI: motivational interviewing; NDHD: number of drinks on heavy drinking; NIAAA: National Institute on Alcohol Abuse and Alcoholism; NIDA: National Institute on Drug Abuse; NIH: National Institutes of Health: NIMH: National Institute of Mental Health; NHS: National Health System; PBI: performance based interviewing; PBSF: protective behavioral strategies feedback; PHDD: percentage of heavy drinking days; PNF: personalized normative feedback: Q/F/P: Quantity/Frequency/Peak; RAPI: Rutgers Alcohol Problems Index; RCT: randomised controlled trial; RSOD: risky single occasion drinking; SES: socioeconomic status; T‐ASI: Teen Addiction Severity Index; TEAP: Trainee Employee Assistance Program; TLFB: Timeline Followback; UAP: university assistance programme.