Table 1.
Characteristics of the study cohort on admission to the ICU stratified according to gender
| All patients | Male | Female | P value | |
|---|---|---|---|---|
| n | 3,902 | 2,479 | 1,423 | |
| Age (years) | 64.3 ± 15.7 | 63.4 ± 15.6 | 66.0 ± 16 | < 0.001 |
| SAPS II | 37.2 ± 17.7 | 37.2 ± 18 | 37.5 ± 17.5 | 0.326 |
| Comorbidities | ||||
| Diabetes mellitus | 586 (15) | 361 (14.6) | 225 (15.8) | 0.293 |
| Renal failure (without dialysis) | 269 (6.9) | 172 (6.9) | 97 (6.8) | 0.885 |
| Renal failure (with dialysis) | 97 (2.5) | 55 (2.2) | 42 (3) | 0.157 |
| Hematological cancer | 65 (1.7) | 44 (1.8) | 21 (1.5) | 0.518 |
| Chronic heart failure (NYHA III to IV) | 303 (7.8) | 182 (7.3) | 121 (8.5) | 0.192 |
| COPD | 280 (7.2) | 192 (7.7) | 88 (6.2) | 0.069 |
| Type of admission | 0.279 | |||
| Elective surgery | 1,515 (38.8) | 967 (39) | 548 (38.5) | |
| Emergency surgery | 979 (25.1) | 602 (24.3) | 377 (26.5) | |
| Medical admission | 1,408 (36.1) | 910 (36.7) | 498 (35) | |
| Reason for admission | 0.179 | |||
| Only monitoring | 1,793 (46) | 1,119 (45.1) | 674 (47.4) | |
| Intensive care | 2,109 (54) | 1,360 (54.9) | 749 (52.6) | |
| Trauma | 514 (13.2) | 392 (15.8) | 122 (8.6) | < 0.001 |
| Referring facility | 0.087 | |||
| Other hospital | 445 (11.4) | 287 (11.6) | 158 (11.1) | |
| Surgical ward | 1,789 (45.8) | 1,106 (44.6) | 683 (48) | |
| Emergency department | 937 (24.0) | 629 (25.4) | 308 (21.6) | |
| Medical ward | 625 (16.0) | 389 (15.7) | 236 (16.6) | |
| Other ICU | 106 (2.7) | 68 (2.7) | 38 (2.7) | |
| ICU mortality | 780 (20) | 498 (20.1) | 282 (19.8) | 0.838 |
| ICU length of stay (days) | 3 (1 to 9) | 3 (1 to 10) | 3 (1 to 7) | 0.154 |
Data presented as mean ± standard deviation, n (%) or median (interquartile range). COPD, chronic obstructive pulmonary disease; NYHA, New York Heart Association classification; SAPS, Simplified Acute Physiology Score.