P/F ratio | P/FP ratio | |||||||
---|---|---|---|---|---|---|---|---|
Outcomes | Severe (≤ 100) N = 640 | MoNderate (101–200) N = 1,928 | Mild (201–300) N = 839 | P value for trend | Severe (≤ 100) N = 794 | Moderate (101–200) N = 1,252 | Mild (201–300) N = 640 | P value for trend |
Hospital mortality, N (%) | 295 (46.1) | 549 (28.5) | 204 (24.3) | < 0.001 | 340 (42.8) | 358 (28.6) | 161 (25.1) | < 0.001 |
Ventilator-free days (IQR) | 3 (0–17) | 17 (0–22) | 21 (1.25–24) | < 0.001 | 1.5 (0–17) | 17 (0–22) | 19 (0–23) | < 0.001 |