Ahluwalia 2006.

Methods	Setting: community health centre, USA Recruitment: African‐American light smokers recruited from the clinic and using various routes of advertisement
Participants	755 smokers of ≤ 10 cigarettes per day; the characteristics of 378 participants in the relevant arm were as follows: 66.1% to 68.3% female; average age 43.5 to 45.2; average cigarettes per day 7.5 to 7.8 Therapists: trained counsellors who followed semi‐structured scripts
Interventions	Pharmacotherapy: NRT; 2 mg nicotine gum for 8 weeks including weaning period. Dose depended on the number of cigarettes smoked per day 1. Motivational interviewing: 3 sessions in person and 3 sessions by telephone, each lasting 20 minutes 2. Health education: 3 sessions in person and 3 sessions by telephone, each lasting 20 minutes
Outcomes	7‐day point prevalence abstinence at weeks 1, 3, 6, 8, 16 and 6 months Validation: cotinine‐verification (≤ 20 ng/mL), expired carbone monoxide ≤ 10 ppm
Source of Funding/CoI	National Cancer Institute at the National Institutes of Health (R01CA091912) Glaxo‐SmithKline provided study medication. No declarations of interest
Notes	New for 2019 update. Previously excluded. Reason: Conselling conditions had same number of contacts and duration. Compared Motivational Interviewing and Health Education (HE) in a factorial trial with nicotine gum or placebo (results favoured HE (control) condition). Included in Lindson‐Hawley 2015 Cochrane review of motivational interviewing
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	No details given
Allocation concealment (selection bias)	Low risk	Sealed envelope with pre‐assigned randomisation numbers
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Biochemically validated
Incomplete outcome data (attrition bias) All outcomes	Low risk	11.1% to 16.9% lost to follow‐up at 6 months