Table 1. Comparison of clinical characteristics between ICU survivors and non-survivors.
| Variables | Overall (n = 15268) | Survivors (n = 13538) | Non-survivors (n = 1730) | p |
|---|---|---|---|---|
| Age (years) | 64.6±20.0 | 64.0±20.4 | 69.6±16.2 | <0.001 |
| Gender (male vs) | 8175 (53.54) | 7240 (53.48) | 935 (54.05) | 0.656 |
| Lactate | <0.001 | |||
| Normal (<2mmol/l) | 4842 (31.71) | 4246 (31.36) | 596 (34.45) | |
| Hyperlactamia (>2 mmol/l) | 4336 (28.40) | 3429 (25.33) | 907 (52.43) | |
| Missing values | 6090 (39.89) | 5863 (43.31) | 227 (13.12) | |
| Care unit | <0.001 | |||
| MICU | 6,698 (43.87) | 5,816 (42.96) | 882 (50.98) | |
| SICU | 1,050 (6.88) | 973 (7.19) | 77 (4.45) | |
| CCU | 3,133 (20.52) | 2,724 (20.12) | 409 (23.64) | |
| CSRU | 4,387 (28.73) | 4,025 (29.73) | 362 (20.92) | |
| SOFA | 6.34±4.07 | 5.88±3.77 | 9.95±4.51 | <0.001 |
| SAPS-Ⅰ | 14.67±5.41 | 14.11±5.12 | 19.21±5.54 | <0.001 |
| Fever in 24 hours | 9287 (60.83) | 8028 (59.30) | 1259 (72.77) | <0.001 |
| Fever during ICU stay | 11433 (74.88) | 10036 (74.13) | 1397 (80.75) | <0.001 |
| Temperature load (°C×hr) | 32.01 (30.77, 33.26) | 30.26 (28.95, 31.56) | 45.75 (41.79, 49.70) | <0.001 |
| Antipyretic therapy of any method | 1852 (12.13) | 1555 (11.49) | 297 (17.17) | <0.001 |
| Antipyretic medication | 1027 (6.73) | 898 (6.63) | 129 (7.46) | 0.198 |
| External cooling | 1006 (6.59) | 794 (5.86) | 212 (12.25) | <0.001 |
Abbreviations: MICU, medical intensive care unit; SICU, surgical intensive care unit; CCU, coronary care unit; CSRU, Cardiac Surgery Recovery Unit