Medication | No. of studies | Estimated OR (95% CI) |
---|---|---|
NRT patch | 43 | 1.91 (1.71–2.14) |
NRT gum | 56 | 1.68 (1.51–1.88) |
Other type of NRT (e.g., lozenge, inhaler, oral spray) | 16 | 2.04 (1.75–2.38) |
Combination NRT | 2 | 2.73 (2.07–3.65) |
Bupropion | 36 | 1.85 (1.63–2.10) |
Varenicline | 15 | 2.89 (2.40–3.48) |
Note: CI = confidence interval, NRT = nicotine replacement therapy, OR = odds ratio.