Comparison 8. Nicotine EC + NRT versus NRT.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
8.1 Smoking cessation	1		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
8.2 Adverse events	2		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
8.2.1 12 weeks	2		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
8.3 Serious adverse events	3	682	Risk Ratio (M‐H, Fixed, 95% CI)	1.26 [0.46, 3.42]
8.3.1 5 weeks	1	7	Risk Ratio (M‐H, Fixed, 95% CI)	Not estimable
8.3.2 12 weeks	1	50	Risk Ratio (M‐H, Fixed, 95% CI)	3.00 [0.13, 70.30]
8.3.3 6 months	1	625	Risk Ratio (M‐H, Fixed, 95% CI)	1.12 [0.39, 3.27]