Weighted event rates | |||||
---|---|---|---|---|---|
Outcomes | Number of studies (patients) | Heparin | Control | RRR (95% CI) | NNT (CI) |
Any DVT | 13 (993) | 25% | 42% | 40% (29 to 50) | 6 (5 to 9) |
Proximal DVT | 7 (407) | 8.6% | 21% | 55% (27 to 72) | 9 (6 to 17) |
Distal DVT | 6 (357) | 25% | 38% | 35% (11 to 53) | 8 (5 to 25) |
Mechanical methods | Control | ||||
---|---|---|---|---|---|
*Abbreviations defined in glossary; experimental event rates, RRR, NNT, and CI calculated from data in article. Follow up ranged from 4 days to 6 months. Meta-analyses were done using a fixed effects model. | |||||
Any DVT | 5 (450) | 6.7% | 23% | 69% (49 to 81) | 7 (5 to 10) |
Proximal DVT | 4 (414) | 2.4% | 12% | 78% (47 to 90) | 10 (7 to 20) |
Distal DVT | 2 (103) | 19% | 42% | 55% (15 to 77) | 5 (3 to 17) |
PE | 5 (487) | 2.4% | 6.4% | 60% (4 to 83) | 25 (13 to undefined) |