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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 Short‐term smoking cessation | 19 | 2588 | Risk Ratio (M‐H, Fixed, 95% CI) | 1.22 [1.08, 1.38] |
| 2 Long‐term smoking cessation | 11 | 1892 | Risk Ratio (M‐H, Fixed, 95% CI) | 1.10 [0.86, 1.40] |
