Table 1 Characteristics of the 6994 critically ill ventilated patients categorised by 1-year mortality
All | Survivor | Non-survivor | p value | |
|---|---|---|---|---|
N = 6994 | N = 4589 | N = 2405 | ||
Demographic data | ||||
Age (years) | 64.1 ± 16.2 | 61.6 ± 16.1 | 68.7 ± 15.3 | < 0.01 |
Sex (male) | 4550 (65.1%) | 2919 (63.6%) | 1631 (67.8%) | < 0.01 |
Body mass index | 24.3 ± 4.7 | 24.8 ± 4.7 | 23.3 ± 4.6 | < 0.01 |
CCI categories | < 0.01 | |||
CCI: 0 | 960 (13.7%) | 863 (18.8%) | 97 (4.0%) | |
CCI: 1–2 | 4054 (58.0%) | 2700 (58.8%) | 1354 (56.3%) | |
CCI ≧ 3 | 1980 (28.3%) | 1026 (22.4%) | 954 (39.7%) | |
ICU types | < 0.01 | |||
Medical ICU | 2367 (33.8%) | 1165 (25.4%) | 1202 (50.0%) | |
Surgical ICU | 1480 (21.2%) | 863 (18.8%) | 617 (25.7%) | |
Cardiac ICU | 1441 (20.6%) | 1209 (26.4%) | 232 (9.6%) | |
Neurological ICU | 1706 (24.4%) | 1352 (29.4%) | 354 (14.7%) | |
APACHE II | 23.3 ± 6.9 | 21.6 ± 6.6 | 26.3 ± 6.4 | < 0.01 |
Laboratory data (day-1) | ||||
White blood cell count (count/μL) | 11,775.6 ± 9091.8 | 11,414.5 ± 4310.7 | 12,464.7 ± 14,292.0 | < 0.01 |
Hemoglobin (g/dL) | 10.5 ± 1.9 | 10.9 ± 1.9 | 9.9 ± 1.8 | < 0.01 |
Platelet (103/μL) | 185.40 ± 95.5 | 192.9 ± 90.9 | 170.9 ± 102.0 | < 0.01 |
Albumin (mg/dL) | 3.3 ± 0.8 | 3.4 ± 0.8 | 3.0 ± 0.9 | < 0.01 |
BUN (mg/dL) | 28.6 ± 25.3 | 24.0 ± 20.7 | 37.5 ± 30.4 | < 0.01 |
Creatinine (mg/dL) | 1.6 ± 1.9 | 1.5 ± 1.8 | 1.9 ± 2.0 | < 0.01 |
Lactate (mg/dL) | 16.0 ± 15.4 | 14.0 ± 13.4 | 19.9 ± 17.9 | < 0.01 |
Outcome | ||||
ICU-stay (day) | 11.3 ± 10.7 | 9.2 ± 9.0 | 15.3 ± 12.4 | < 0.01 |
Ventilator-day | 8.6 ± 10.6 | 6.3 ± 8.6 | 13.0 ± 12.5 | < 0.01 |
Hospital-stay (day) | 27.3 ± 24.4 | 24.2 ± 23.5 | 33.3 ± 25.1 | < 0.01 |