Aspirin v placebo for colorectal adenomas in previous colorectal cancer†
| Outcome | Aspirin | Placebo | Adjusted hazard ratio (95% CI)‡ | NNT (CI) |
|---|---|---|---|---|
| †Abbreviations defined in glossary; NNT and CI calculated from data in article. | ||||
| ‡Hazard ratio adjusted for time to a first colonoscopic examination, number of colonoscopic examinations, cancer stage, age, and sex. | ||||
| ≥1 colorectal adenoma detected | 17% | 27% | 0.64 (0.43 to 0.94) | 9 (6 to 29) |