Table 4
Prediction of death from respiratory failure using maximum oxygenation index (OI)
| OI ⩾ | Sensitivity | Specificity | Positive predictive value | Negative predictive value | Positive likelihood ratio | Negative likelihood ratio |
| 10 | 0.94 | 0.52 | 0.38 | 0.97 | 1.97 | 0.11 |
| 15 | 0.89 | 0.65 | 0.44 | 0.95 | 2.57 | 0.17 |
| 20 | 0.80 | 0.77 | 0.52 | 0.93 | 3.48 | 0.26 |
| 25 | 0.66 | 0.84 | 0.56 | 0.89 | 4.13 | 0.41 |
| 30 | 0.60 | 0.91 | 0.68 | 0.88 | 6.78 | 0.44 |
| 35 | 0.57 | 0.96 | 0.80 | 0.88 | 12.91 | 0.45 |
