Comparison 2. More intensive versus less intensive counselling.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Smoking cessation at longest follow‐up	11	2920	Risk Ratio (M‐H, Fixed, 95% CI)	1.29 [1.09, 1.53]
1.1 No pharmacotherapy	4	872	Risk Ratio (M‐H, Fixed, 95% CI)	1.42 [0.98, 2.06]
1.2 Adjunct to pharmacotherapy	8	2048	Risk Ratio (M‐H, Fixed, 95% CI)	1.26 [1.04, 1.52]