Table 1.
Demographics and clinical patient characteristics (n = 3,604)
| Variable | Total | Group 1 (n = 678) |
Group 2 (n = 1,708) |
Group 3 (n = 934) |
Group 4 (n = 284) |
|---|---|---|---|---|---|
| Age (yr) | 69.1 ± 15.9 | 58.6 ± 16.3 | 70.9 ± 15.3 | 71.6 ± 14.1 | 75.7 ± 12.8 |
| Male sex | 2,142 (59.4) | 460 (67.9) | 987 (57.8) | 537 (57.5) | 158 (55.6) |
| Admission for medical problem | 1,179 (32.7) | 247 (36.4) | 585 (34.3) | 297 (31.8) | 50 (17.6) |
| Length of hospital stay (d) | 21 (1−1,848)/ 41.3 ± 70.2 | 16 (2−571)/ 31.9 ± 51.9 | 21 (1−1,848)/ 41.0 ± 77.9 | 24 (2−738)/ 45.8 ± 70.4 | 32 (3−479)/ 50.8 ± 54.8 |
| Length of ICU stay (d) | 4 (1−343) /8.4 ± 13.6 |
3 (1−141) /5.3 ± 9.0 |
4 (1−157) /7.0 ± 10.8 |
5 (1−343) /10.7 ± 17.4 |
10 (1−154) /16.8 ± 18.3 |
| Mortality at the end of ICU stay | 461 (12.8) | 38 (5.6) | 207 (12.1) | 152 (16.3) | 64 (22.5) |
| Emergent admission | 2,299 (63.8) | 430 (63.4) | 1,043 (61.1) | 594 (63.6) | 232 (81.7) |
| Surgery prior to ICU admission | 2,181 (60.5) | 350 (51.6) | 1,001 (58.6) | 603 (64.6) | 227 (79.9) |
| Emergent surgery prior to ICU admission | 1,018 (28.2) | 115 (17.0) | 413 (24.2) | 314 (33.6) | 176 (62.0) |
Values are presented as mean ± standard deviation (SD), number (%), or median (range).
Group 1: APACHE 1−10, Group 2: APACHE 11−20, Group 3: APACHE 21−30, Group 4: APACHE > 30.
ICU, intensive care unit; APACHE II, Acute Physiology and Chronic Health Evaluation-II.