Prone v supine positioning for acute respiratory failure*
| Mortality | Prone | Supine | RRR (95% CI) | NNT (CI) |
|---|---|---|---|---|
| At 10 days | 21% | 25% | 16% (–27 to 44) | Not significant |
| RRI (CI) | NNH (CI) | |||
|---|---|---|---|---|
| *ICU = intensive care unit. Abbreviations defined in glossary; RRR, RRI, NNT, NNH, and CI calculated from data in article. | ||||
| At ICU discharge | 51% | 48% | 5% (–16 to 32) | Not significant |
| At 6 months | 63% | 59% | 6% (–12 to 28) | Not significant |








