Baseline smoking status | Follow up | Event rates | RBI (95% CI) | NNT (CI) |
---|---|---|---|---|
*Abbreviations defined in glossary; RBI, NNT, and CI calculated from control event rate and odds ratio (CI) in article. Based on total n = 2524 with multiple imputation for missing values. | ||||
All participants | 1 year | 77% v 73% | 6.1% (2 to 10) | 23 (14 to 67) |
2 years | 73% v 69% | 6.2% (1 to 11) | 24 (14 to 158) | |
Smokers (smoked in previous 30 d) | 1 year | 33% v 23% | 38% (4 to 77) | 12 (6 to 114) |
2 years | 30% v 21% | 39% (2 to 84) | 13 (6 to 304) | |
Non-smokers | 1 year | 91% v 88% | 3.4% (0.1 to 6) | 34 (20 to 949) |
2 years | 86% v 83% | 3.5% (0.5 to 7) | Not significant |