Comparison between survivors and non-survivors after propensity score matching
| Variables | Survivors (n=224) | Non-survivors (n=96) | P values |
| Age | 47.5 (34–59) | 52.5 (36–66.75) | 0.029 |
| Sex, male | 144 (64.3) | 49 (51) | 0.026 |
| SBP at admission | 110 (91.5–127) | 70 (0–97.75) | <0.001 |
| GCS at admission | 15 (13–15) | 3 (3–10] | <0.001 |
| Pelvic AIS | 4 (4–5) | 5 (4.25–5) | <0.001 |
| Head AIS | 0 (0–1) | 0 (0–4) | <0.001 |
| Thorax AIS | 2 (0–3) | 3 (0–4) | <0.001 |
| Abdomen AIS | 0 (0–3) | 2 (0–3) | <0.001 |
| ISS | 29 (25–38) | 43 (32.25–50) | <0.001 |
| Mechanism of injury | 0.156 | ||
| Traffic related | 119 (53.1) | 60 (62.5) | |
| Falls | 84 (37.5) | 32 (33.3) | |
| Other | 21 (9.4) | 4 (4.2) | |
| Transfer, yes | 143 (63.8) | 38 (56.6) | <0.001 |
| Dataset, ATDB | 101 (45.1) | 59 (61.5) | 0.007 |
All continuous variables were shown as a median (IQR) and compared by Mann-Whitney U test.
All categorical variables were shown as a number (percentage) and compared by χ2 test.
AIS, Abbreviated Injury Scale; ATDB, Ajou Trauma Data Bank; GCS, Glasgow Coma Scale; ISS, Injury Severity Score; SBP, systolic blood pressure.