Comparison 1. The effect of training health professionals on patient smoking cessation.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Smoking cessation at longest follow‐up	15		Odds Ratio (M‐H, Fixed, 95% CI)	Subtotals only
1.1 Point prevalence	14	13459	Odds Ratio (M‐H, Fixed, 95% CI)	1.36 [1.20, 1.55]
1.2 Continuous abstinence	8	9443	Odds Ratio (M‐H, Fixed, 95% CI)	1.60 [1.26, 2.03]
2 Patient asked to set a quit date	8	4332	Odds Ratio (M‐H, Random, 95% CI)	4.98 [2.29, 10.86]
3 Patient asked to make a follow‐up appointment	7	3114	Odds Ratio (M‐H, Random, 95% CI)	3.34 [1.51, 7.37]
4 Number of smokers counselled	14	8531	Odds Ratio (M‐H, Random, 95% CI)	2.28 [1.58, 3.27]
5 Number of smokers receiving self‐help material	9	4925	Odds Ratio (M‐H, Random, 95% CI)	3.52 [1.90, 6.52]
6 Number of smokers receiving nicotine gum/replacement therapy	9	5073	Odds Ratio (M‐H, Random, 95% CI)	1.57 [0.87, 2.84]
7 Number of smokers prescribed a quit date	3	1172	Odds Ratio (M‐H, Fixed, 95% CI)	14.18 [6.57, 30.61]