| mild ARDS (n= 33) | moderate ARDS (n= 83) | severe ARDS (n= 79) | |
---|---|---|---|---|
Ventilator-free days within 28 days | 18 (1-22) | 9 (0-19) | 0 (0-18)* | |
 | 28-day mortality | Unadjusted odds ratio | 95% confidence interval | P value |
mild ARDS (n = 33) | 18.2% (n = 6) | 1 | (reference) | Â |
moderate ARDS (n = 83) | 38.6%** (n = 32) | 2.824 | 1.050-7.590 | 0.048 |
severe ARDS (n = 79) | 48.1%** (n = 38) | 4.167 | 1.553-11.236 | 0.003 |