Baseline characteristics and associations with mortality at hospital discharge
| Variable | Summary measure | Association with in-hospital mortality OR (95% CI) | P value |
| Age (years), mean (SD) | 49.7 (21.8) | 1.03 (1.02 to 1.05) | <0.001 |
| Male sex (%) | 142 (72.8) | 0.89 (0.43 to 1.82) | 0.75 |
| Injury Severity Score | |||
| <12 | 30 (15.4%) | Ref | Ref |
| 12–25 | 52 (26.7%) | 1.01 (0.27 to 3.78) | 0.99 |
| 26–40 | 48 (24.6%) | 2.41 (0.70 to 8.26) | 0.16 |
| >40 | 65 (33.3%) | 4.17 (1.30 to 13.37) | 0.016 |
| Cause of injury | |||
| Motor car or truck crash | 53 (27.2%) | 4.19 (0.86 to 20.3) | 0.075 |
| Motorcycle crash | 24 (12.3%) | 1.07 (0.16 to 7.22) | 0.94 |
| Pedal cycle crash | 9 (4.6%) | 2.14 (0.25 to 18.50) | 0.49 |
| Pedestrian | 37 (19.0%) | 4.24 (0.84 to 21.51) | 0.081 |
| Low fall | 11 (5.6%) | 2.81 (0.39 to 20.45) | 0.31 |
| High fall | 19 (19.7%) | 3.46 (0.59 to 20.21) | 0.17 |
| Penetrating | 25 (12.8%) | 0.31 (0.03 to 3.75) | 0.36 |
| Other | 18 (8.7%) | Ref | Ref |
| Prehospital time (hrs) | 1.9 (1.3–2.9) | 1.08 (0.85 to 1.37) | 0.53 |
| Initial systolic blood pressure (mm Hg), mean (SD) | 70.3 (16.9) | 0.96 (0.94 to 0.98) | <0.001 |
| Initial pulse rate (beats/min), mean (SD) | 97.7 (33.3) | 0.99 (0.98 to 1.00) | 0.028 |
| Initial shock index ≥1 | 156 (80.0%) | 1.40 (0.59 to 3.28) | 0.45 |
| FAST | 0.36 | ||
| Negative | 125 (64.1%) | Ref | |
| Positive | 59 (30.3%) | 1.40 (0.68 to 2.88) | |
| Unknown or equivocal | 11 (5.6%) | – | |
| Intracranial bleeding or diffuse axonal injury | 54 (27.8%) | 3.65 (1.83 to 7.27) | <0.001 |
FAST, Focused Assessment with Sonography in Trauma.