Skip to main content
. 2016 Jul 18;2016(7):CD007025. doi: 10.1002/14651858.CD007025.pub4

Martens 2013.

Methods Design: RCT
Follow‐up: 1, 6 months
Attrition: 4%, 6%
Participants Mean age (years): 20.09
Sex: 65.2% female
N participants: 365
Allocation: n = 111 PBSF; n = 121 PNF; n = 133 control
Setting: university; higher risk students
Country: USA
Interventions Programme type: motivational interviewing
Set‐up: individual single session
Key components: The format of the PNF interventions is modelled on the BASICS intervention, and involved the delivery of personalised feedback in an MI‐based framework
Duration: 15‐20 min
Control: alternative intervention
Outcomes Outcomes: alcohol consumption were average drinks per week, average number of drinking days per week, and peak blood alcohol concentration (BAC); alcohol‐related problems
Measures: modified Daily Drinking Questionnaire; Rutgers Alcohol Problems Index
Funding and Declared Conflicts of Interest Funded by US NIH. No information or declarations about potential conflicts of interest
Notes A third trial arm that also comprised an MI‐based intervention has not been included in this review and meta‐analysis; we selected the PNF‐based intervention as this is a more common MI‐oriented intervention
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Low risk Participants were randomised, stratified by sex, via a random number table
Allocation concealment (selection bias) Unclear risk Insufficient information to make judgement
Incomplete outcome data (attrition bias) 
 All outcomes Low risk Low attrition (6%).
Selective reporting (reporting bias) Low risk All alcohol outcomes 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 Unclear risk Insufficient information to make judgement
Unit of Analysis issues Low risk Not applicable