Low molecular weight heparin (LMWH) vs unfractionated heparin (UFH) to prevent recurrent venous thromboembolism at 3 months
| Weighted event rates | RRR (95% CI) | NNT (CI) | |
|---|---|---|---|
| LMWH | UFH | ||
| 3.30% | 5.30% | 30% (11 to 46) | 50 (34 to 100) |
| Unweighted event rates | |||
|---|---|---|---|
| LMWH | UFH | ||
| 3.57% | 5.30% | 33% (14 to 47) | 58 (36 to 148) |