Variable | Training set | Validation set |
---|---|---|
N | 2915 | 1909 |
Sex, male (%) | 1960 (67.2) | 995 (52.1) |
Death during admission, yes (%) | 286 (9.8) | 199 (10.4) |
Death time during admission | ||
< 24 h (%) | 58 (20.3) | 43 (21.6) |
24–48 h (%) | 42 (14.7) | 35 (17.6) |
≥ 48 h (%) | 186 (65.0) | 121 (60.8) |
Length of ICU stay, hour | ||
Median (Q1,Q3) | 51.70 (28.95, 121.14) | 46.08 (25.87, 98.22) |
< 24 h (%) | 485 (16.6) | 366 (19.2) |
24–48 h (%) | 893 (30.6) | 628 (32.9) |
≥ 48 h (%) | 1537 (52.7) | 915 (47.9) |
Primary diagnosis | ||
Fracture of skull (%) | 571 (19.6) | 353 (18.5) |
Fracture of neck and trunk (%) | 574 (19.7) | 442 (23.2) |
Fracture of limb (%) | 310 (10.6) | 259 (13.6) |
Intracranial injury (%) | 570 (19.6) | 340 (17.8) |
Internal injury of trunk (%) | 460 (15.8) | 355 (18.6) |
Other (%)a | 428 (14.7) | 160 (8.4) |
Age, mean ± SD | 51.06 ± 22.38 | 54.54 ± 17.38 |
SAP II score, mean ± SD | 35.15 ± 12.21 | 34.17 ± 11.74 |
APACHE II score, mean ± SD | 8.63 ± 5.00 | 6.85 ± 4.48 |
GCS | 10.90 ± 4.26 | 12.17 ± 2.85 |