Cropsey 2015.

Methods	Setting: community corrections offices, USA Recruitment: smokers under community corrections supervision were recruited via flyers posted at the community corrections offices
Participants	500 smokers; 33.0% female, average age 37.4; average number of cigarettes smoked per day 17.9 Therapists: counsellors were doctoral or masters level clinical psychologists who had been trained in smoking cessation counselling
Interventions	Pharmacotherapy: NRT; 12 weeks’ supply of bupropion 1. one session of face‐to‐face brief advice 2. four weekly sessions of face‐to‐face brief advice and intensive counselling, each lasting 20 to 30 minutes
Outcomes	Abstinence (carbon monoxide level ≤ 3 ppm) at all study visits (weeks 8, 12 and months 6, 9, 12) Validation: carbon monoxide level (≤ 3 ppm) measured using the Vitalograph Breath Carbone Monoxide monitor
Source of Funding/CoI	The National Cancer Institute and the National Institute of Heatlh. No declarations of interest
Notes	New for 2019 update Data on the number of abstinent participants received from the authors via email correspondence
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	“randomisation scheme was blocked on race…”. No further details given
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	Low risk	Lost to follow‐up rates at 12 months: no counselling arm 25.8%; counselling arm 23.4%