Comparison 1. Individual counselling compared to minimal contact control.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Smoking cessation at longest follow‐up	33	13762	Risk Ratio (M‐H, Fixed, 95% CI)	1.48 [1.34, 1.64]
1.1 Counselling versus control (no systematic pharmacotherapy)	27	11100	Risk Ratio (M‐H, Fixed, 95% CI)	1.57 [1.40, 1.77]
1.2 Counselling plus pharmacotherapy versus pharmacotherapy alone	6	2662	Risk Ratio (M‐H, Fixed, 95% CI)	1.24 [1.01, 1.51]