Antiplatelet v control treatment for serious vascular events (mean 0.7 to 29 mo of treatment)*
| Adjusted event rates | |||||
|---|---|---|---|---|---|
| High risk category | Number of trials | Antiplatelet | Control | RRR (95% CI) | NNT (CI) |
| *Serious vascular events were non-fatal MI, non-fatal stroke, or death from a vascular or unknown cause. MI = myocardial infarction; TIA = transient ischaemic attack. Other abbreviations defined in glossary; RRR, NNT, and CI calculated from data in article. | |||||
| All trials | 195 | 10.7% | 13.2% | 19% (16 to 21) | 41 (36 to 48) |
| Previous MI | 12 | 13.5% | 17.0% | 21% (16 to 26) | 28 (22 to 39) |
| Acute MI | 15 | 10.4% | 14.2% | 27% (21 to 32) | 26 (21 to 35) |
| Previous stroke or TIA | 21 | 17.8% | 21.4% | 17% (12 to 21) | 28 (22 to 39) |
| Acute stroke | 7 | 8.2% | 9.1% | 10% (4.3 to 16) | 108 (68 to 261) |
| Other high risk condition | 140 | 8.0% | 10.2% | 21% (16 to 26) | 46 (36 to 61) |