Bricker 2014.

Methods	Setting: Quitline in South Carolina, USA Recruitment: recruited uninsured callers to the South Carolina State Quitline
Participants	121 smokers; 69% female; average age 39.1; 65% smoked more than half pack per day Therapists: counsellors were Bachelors or Masters level providers with at least 3 years of general counselling experience
Interventions	Pharmacotherapy: NRT; 2‐week course of nicotine patch or gum (participant’s choice) 1. 5 sessions of cognitive behavioural therapy telephone intervention (1st call 30 minutes and each subsequent call 15 minutes) 2. 5 sessions of acceptance and commitment therapy telephone intervention (1st call 30 minutes and each subsequent call 15 minutes)
Outcomes	30‐day point prevalence abstinence at 6 months Validation: none
Source of Funding/CoI	National Institute on Drug Abuse, National Cancer Institute. Authors declared consultancy for Pfizer
Notes	New for 2019 update. Previously excluded. Reason: both the control and the intervention received equal amounts behavioural counselling; telephone‐delivered acceptance and commitment therapy (ACT) versus cognitive behavioral therapy (CBT) for smoking cessation was being assessed.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Computer‐generated randomisation sequence
Allocation concealment (selection bias)	Unclear risk	Insufficient details given
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Self‐report only but contact matched in both groups so differential misreport judged unlikely
Incomplete outcome data (attrition bias) All outcomes	Low risk	27.1‐38.7% lost to follow‐up at 6 months