|Outcomes at mean of 3.6 years||Comparison||Event rates||RRR (95% CI)||NNT (CI)|
|*Combined endpoint = cardiovascular death, non-fatal myocardial infarction, and non-fatal stroke. Abbreviations defined in glossary; RRR, RRI, NNT, NNH, and CI calculated from data in article.|
|Combined endpoint||Aspirin v no aspirin||2.0% v 2.8%||29% (−4 to 52)||Not significant|
|Cardiovascular death||Aspirin v no aspirin||0.8% v 1.4%||44% (1 to 69)||166 (81 to 62500)|
|Total cardiovascular events||Aspirin v no aspirin||6.3% v 8.2%||23% (5 to 38)||53 (30 to 258)|
|Combined endpoint||Vitamin E v no vitamin E||2.5% v 2.3%||7% (−56 to 26)||Not significant|
Aspirin but not vitamin E prevented cardiovascular events in patients at risk
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