Hall 1994.

Methods	Country: USA Recruitment: community volunteers or referrals
Participants	149 smokers (> 10 cpd) 52% F, av age 41, av cpd 25, 31% had history of MDD Therapists: physician, psychologist. Both received training.
Interventions	Pharmacotherapy: NRT (gum, 2 mg for up to 12 wks, tapering from wk 4) 1. Mood Management. 10 x 2 hr sessions over 8 wks. Similar to control, plus specific cognitive‐behavioural components for developing skills for coping with situations leading to poor mood. Thought stopping, rational‐emotive techniques, relaxation etc. 2. Standard group therapy. 5 x 90 min sessions over 8 wks. Information and group support for planning and implementing individual strategies
Outcomes	Continuous abstinence at 52 wks (confirmed quit at all prior assessments and no smoking in previous wk) Validation: CO ≤ 10 ppm and urine cotinine ≤ 60 ng/mL
Source of Funding/CoI	National Institute on Drug Abuse. Merrell Dow Pharmaceuticals Inc. provided drugs. No declarations of interest.
Notes	Both behavioural interventions were relatively intensive. Positive effect reported for subgroup with history of major depression
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Randomised, method not described
Allocation concealment (selection bias)	Unclear risk	No details given
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Biochemically validated
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Dropouts included as smokers, but numbers not specified