Table 1.
Baseline characteristics according to survivors and death
| Overall (n=21 822) | Survival group (n=18 673) | Death group (n=3149) | P | |
| Age, years | 66.68 (52.76, 79.55) | 65.37 (51.65, 78.41) | 75.05 (61.16, 83.58) | <0.001 |
| Sex, n (%) | 0.004 | |||
| Female | 10 140 (46.47) | 8602 (46.07) | 1538 (48.84) | |
| Male | 11 682 (53.53) | 10 071 (53.93) | 1611 (51.16) | |
| Ethnicity, n (%) | <0.001 | |||
| White | 15 875 (72.75) | 13 619 (72.93) | 2256 (71.64) | |
| Black | 2080 (9.53) | 1857 (9.94) | 223 (7.08) | |
| Other | 3867 (17.72) | 3197 (17.12) | 670 (21.28) | |
| ICU type | <0.001 | |||
| CCU | 3331 (15.26) | 2864 (15.34) | 467 (14.83) | |
| CSRU | 2443 (11.20) | 2279 (12.20) | 164 (5.21) | |
| MICU | 10 411 (47.71) | 8713 (46.66) | 1698 (53.92) | |
| SICU | 3775 (17.30) | 3201 (17.14) | 574 (18.23) | |
| TSICU | 1862 (8.53) | 1616 (8.65) | 246 (7.81) | |
| SAPS II | 34 (25, 43) | 32 (24, 40) | 48 (37.5, 60) | <0.001 |
| Peripheral blood index | ||||
| WBC (109 /L) | 9.9 (7.1, 13.9) | 9.7 (7.1, 13.6) | 11.4 (7.6, 16.6) | <0.001 |
| Lymphocyte (109 /L) | 1.30 (0.83, 1.91) | 1.34 (0.87, 1.94) | 1.06 (0.67, 1.62) | <0.001 |
| Neutrophil (109 /L) | 7.56 (4.88, 11.45) | 7.34 (4.82, 11.07) | 9.16 (5.49, 13.60) | <0.001 |
| Platelet (109 /L) | 208 (150, 275) | 210 (155, 275) | 192 (119, 277) | <0.001 |
| NLR | 5.75 (3.09, 11.13) | 5.40 (2.95, 10.46) | 8.32 (4.25, 14.75) | <0.001 |
| PLR | 177.9 (115.4, 287.4) | 175.1 (115.1, 280.0) | 199.1 (117.8, 334.9) | <0.001 |
Data are presented as median and IQR or number and percentage.
CCU, coronary care unit; CSRU, cardiac surgery recovery units; ICU, intensive care unit; MICU, medical ICU; NLR, neutrophil-to-lymphocyte ratio; PLR, platelet-to-lymphocyte ratio; SAPS, Simplified Acute Physiology Score; SICU, surgical ICU; TSICU, trauma surgical ICU; WBC, white blood cell.