Respiratory failure, N (%) | 668 (66) | 350 (91) | 318 (51) | <0.0001 |
Time from illness onset to respiratory failure (days) | 7.0 (4.0–12.0) | 8.0 (5.0–12.0) | 7.0 (4.0–11) | 0.04 |
Acute respiratory distress syndrome, N (%) | 408 (40) | 364 (94) | 44 (7) | <0.0001 |
Secondary infection, N (%) | 105 (10) | 74 (19) | 32 (5) | <0.0001 |
Coagulopathy, N (%) | 36 (4) | 24 (6) | 12 (2) | <0.0001 |
Acute kidney failure, N (%) | 224 (22) | 182 (47) | 42 (7) | <0.0001 |
Cardiovascular complication, N (%) | 53 (5) | 39 (10) | 14 (2) | <0.0001 |
Intensive care unit length of stay (days) | 9.0 (5.0–15.0) | 9.0 (5.0–14.0) | 10.0 (5.0–17.0) | 0.36 |
Hospital length of stay (days) | 10.0 (6.0–15.0) | 9.0 (4.0–15.0) | 10.0 (7.0–15.0) | 0.01 |
Time from illness onset to death, discharge or end of the study (days) | 17.0 (12.0–23.0) | 17.0 (10.0–23.0) | 18.0 (13.0–24.0) | 0.005 |