Table 1.
Characteristics of the study population
| Variables | Frequency (%) or median (IQR) |
|---|---|
| Age (years) | 47 (32, 61) |
| Sex | |
| Female | 267,281 (41.9) |
| Male | 370,210 (58.1) |
| Trauma mechanism | |
| Motor vehicle collision | 128,712 (20.2) |
| Fall | 180,277 (28.3) |
| Blunt injury | 129,734 (20.4) |
| Penetrating injury | 41,810 (6.6) |
| Othera | 156,958 (24.6) |
| Vital signs | |
| SBP (mmHg) (n = 530,933) | 135 (120, 150) |
| DBP (mmHg) (n = 531,905) | 80 (71, 90) |
| HR (beats/min) (n = 532,749) | 81 (73, 91) |
| RR (breath/min) (n = 532,441) | 20 (18, 20) |
| BT (℃) (n = 532,911) | 36.5 (36.3, 36.8) |
| GCS (n = 133,587) | 15 (15, 15) |
| EMR-ISS | 9 (4, 11) |
| In-hospital mortality | 6504 (1.0) |
Total number of study population 637,491
BT, body temperature; CI, confidence interval; DBP, diastolic blood pressure; EMR-ISS, excess mortality ratio–adjusted Injury Severity Score; GCS, Glasgow Coma Scale; HR, heart rate; IQR, inter quartile range; OR, odds ratio; RR, respiratory rate; SBP, systolic blood pressure
aOther contains the low-frequency injury mechanisms, such as explosions or foreign bodies