Aspirin v placebo to prevent total invasive cancer and breast, colorectal, and lung cancer at mean 10.1 years*
| Outcomes | Aspirin | Placebo | RRI (95% CI) | NNH |
|---|---|---|---|---|
| *Abbreviations defined in glossary; RRI, RRR, NNH, NNT, and CI calculated from data in article. | ||||
| Total invasive cancer | 7.2% | 7.2% | 1.0% (−8 to 6) | Not significant |
| RRR (CI) | NNT | |||
| Total cancer death | 1.4% | 1.5% | 5.0% (−11 to 19) | Not significant |
| Breast cancer | 3.1% | 3.1% | 2.0% (−9 to 13) | Not significant |
| Colorectal cancer | 0.7% | 0.7% | 3.0% (−24 to 23) | Not significant |
| Lung cancer | 0.5% | 0.6% | 22% (−3 to 41) | Not significant |