Patten 2002.

Methods	Study design: Cluster‐randomized controlled trial Country: USA Recruitment: Volunteers attending Alcoholics Anonymous Group size: approx 8
Participants	48 smokers with history of alcohol dependence but 3 m of drug and alcohol abstinence; 47% women, av. age 42, av. cpd 28 Therapists: different clinical psychologist and doctoral student pair for each condition
Interventions	1. Behavioural counselling, 12 x 2‐hr weekly, TQD wk 8. Includes nicotine fading, skills training, homework, discussion 2. As 1 + Cognitive Behavioural Mood Management skills training. Same length
Outcomes	Abstinence at 12 m, sustained at 1, 3 m. Validation: CO < 10 ppm (PPA rates and informant or CO‐validated rates also reported)
Notes	No non‐group control. Comparison 2.3, effect of additional mood management component
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Method not described; cluster‐randomized to small groups based on order of recruitment
Allocation concealment (selection bias)	Unclear risk	Unclear
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Biochemical validation of abstinence
Incomplete outcome data (attrition bias) All outcomes	Low risk	73% BC and 84% CBT completed 12‐m follow‐up. All participants included in ITT analysis