Class-I elastic compression stockings v no stockings during long-haul flights‡
| Outcomes at 48 hours | Stockings | No stockings | RRR (95% CI) | NNT (CI) |
|---|---|---|---|---|
| Deep venous thrombosis | 0% | 12% | 100% (69 to 100) | 9 (6 to 15) |
| RRI | NNH (CI) | |||
|---|---|---|---|---|
| ‡Abbreviations defined in glossary; RRR, RRI, NNT, NNH, and CI calculated from data in article. | ||||
| Superficial thrombophlebitis | 4% | 0% | ∞ | 25 (13 to 629) |