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. 2022 Nov 17;2022(11):CD010216. doi: 10.1002/14651858.CD010216.pub7

Comparison 3. Nicotine EC versus non‐nicotine EC.

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
3.1 Smoking cessation 5 1447 Risk Ratio (M‐H, Fixed, 95% CI) 1.94 [1.21, 3.13]
3.2 Adverse events 5 840 Risk Ratio (M‐H, Fixed, 95% CI) 1.01 [0.91, 1.11]
3.2.1 1 week 1 48 Risk Ratio (M‐H, Fixed, 95% CI) 1.50 [0.27, 8.19]
3.2.2 8 weeks 1 24 Risk Ratio (M‐H, Fixed, 95% CI) 1.18 [0.38, 3.66]
3.2.3 12 weeks 1 255 Risk Ratio (M‐H, Fixed, 95% CI) 1.01 [0.94, 1.08]
3.2.4 6 months 2 513 Risk Ratio (M‐H, Fixed, 95% CI) 0.97 [0.71, 1.34]
3.3 Serious adverse events 8 1272 Risk Ratio (M‐H, Fixed, 95% CI) 1.00 [0.56, 1.79]
3.3.1 1 week 1 48 Risk Ratio (M‐H, Fixed, 95% CI) Not estimable
3.3.2 4 weeks 1 74 Risk Ratio (M‐H, Fixed, 95% CI) Not estimable
3.3.3 8 weeks 1 24 Risk Ratio (M‐H, Fixed, 95% CI) 3.50 [0.16, 78.19]
3.3.4 6 months 4 1009 Risk Ratio (M‐H, Fixed, 95% CI) 0.95 [0.52, 1.72]
3.3.5 1 year 1 117 Risk Ratio (M‐H, Fixed, 95% CI) Not estimable
3.4 Carbon monoxide (ppm) 5   Mean Difference (IV, Fixed, 95% CI) Totals not selected
3.4.1 Change from baseline 1   Mean Difference (IV, Fixed, 95% CI) Totals not selected
3.4.2 Absolute values at follow‐up 4   Mean Difference (IV, Fixed, 95% CI) Totals not selected
3.5 Heart rate 1   Mean Difference (IV, Fixed, 95% CI) Totals not selected
3.5.1 Absolute values at follow‐up 1   Mean Difference (IV, Fixed, 95% CI) Totals not selected
3.6 Systolic blood pressure 1   Mean Difference (IV, Fixed, 95% CI) Totals not selected
3.6.1 Absolute values at follow‐up 1   Mean Difference (IV, Fixed, 95% CI) Totals not selected
3.7 FeNO (ppb) 1   Mean Difference (IV, Fixed, 95% CI) Totals not selected
3.7.1 Change from baseline 1   Mean Difference (IV, Fixed, 95% CI) Totals not selected
3.8 FEV1 (l) 1   Std. Mean Difference (IV, Fixed, 95% CI) Totals not selected
3.8.1 Absolute values at follow‐up 1   Std. Mean Difference (IV, Fixed, 95% CI) Totals not selected
3.9 FEV1/FVC 1   Mean Difference (IV, Fixed, 95% CI) Totals not selected
3.9.1 Absolute values at follow‐up 1   Mean Difference (IV, Fixed, 95% CI) Totals not selected
3.10 NNAL (pmol/mg creatinine) 2 363 Mean Difference (IV, Fixed, 95% CI) ‐0.02 [‐0.45, 0.41]
3.10.1 Change from baseline 1 148 Mean Difference (IV, Fixed, 95% CI) 15.27 [‐4.98, 35.52]
3.10.2 Absolute values at follow‐up 1 215 Mean Difference (IV, Fixed, 95% CI) ‐0.03 [‐0.46, 0.40]
3.11 Product use at 6+ months 3 874 Risk Ratio (M‐H, Fixed, 95% CI) 1.15 [0.94, 1.41]