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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 UFH versus inactive control | 1 | Risk Ratio (IV, Random, 95% CI) | Totals not selected | |
| 2 UFH versus LMWH | 1 | Risk Ratio (IV, Random, 95% CI) | Totals not selected | |
| 3 Fixed‐dose LMWH versus weight‐adjusted dose LMWH | 1 | Risk Ratio (IV, Random, 95% CI) | Totals not selected | |
| 4 UFH versus VKAs | 1 | Risk Ratio (IV, Random, 95% CI) | Totals not selected |
