Table 1.
Patient characteristics
| Age, mean ± SD, year | 62 ± 16 |
| Male, n (%) | 831 (60) |
| SAPS II score, mean ± SD | 38.9 ± 16.4 |
| SOFA score, mean ± SD | 7.6 ± 4.6 |
| Length of ICU stay before May 8, median (IQR), days | 6 (1–15) |
| Type of admission, n (%) | |
| Surgical - emergency | 885 (63.7) |
| Medical | 260 (18.7) |
| Surgical - elective | 198 (14.2) |
| Trauma | 47 (3.4) |
| Admission source, n (%) | |
| OR/recovery room | 488 (35.3) |
| Hospital floor | 465 (33.6) |
| ER/ambulance | 199 (14.4) |
| Other hospital | 194 (14.0) |
| Other | 36 (2.6) |
| Comorbidities, n (%) | |
| Cancer | 321 (23.1) |
| COPD | 225 (16.2) |
| Chronic renal failure | 140 (10.1) |
| Insulin dependent diabetes mellitus | 131 (9.4) |
| Heart failure (NYHA III-IV) | 107 (7.7) |
| Cirrhosis | 79 (5.7) |
| Hematological cancer | 24 (1.7) |
| HIV | 12 (0.9) |
| Organ support on the study day | |
| Mechanical ventilation | 863 (62.0) |
| Renal replacement therapy | 220 (15.8) |
| Outcome measures | |
| ICU LOS, median (IQR), days | 16 (6–34) |
| Hospital LOS, median (IQR), days | 30 (14–59) |
| ICU mortality, n (%) | 382 (29.4) |
| Hospital mortality, n (%) | 472 (36.3) |
SAPS II = Simplified Acute Physiology Score II; SOFA = Sequential Organ Failure Assessment; HIV = Human Immunodeficiency Virus; NYHA III-IV = New York Heart Association class III-IV.