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Number of events according to each endpoint in patients treated or not with heparin.
| Endpoints | Number of studies | Total number of patients | Total number of events |
|---|---|---|---|
| All-cause mortalitya | 31 | 32,550 | 4,789 |
| Major bleedingb | 4 | 12,691 | 426 |
Six studies reported only hazard ratio.
One study reported only odds ratio.
