Table 1 Description of patients and hospital characteristics
| Description |
Non-geriatric age group (n = 12,241) |
Geriatric age group (n = 1653) | p-value |
|---|---|---|---|
| Patients’ characteristics | |||
| Age, median (IQR) | 33 (24–48) | 72 (68–79) | < 0.001 |
| Sex (male) n (%) | 9647 (78.8) | 1056 (65.5) | < 0.001 |
| Mechanism of injury | < 0.001 | ||
| Blunt injury, n (%) | 9407 (76.8) | 1422 (86.0) | |
| Penetrating injury, n (%) | 2834 (23.2) | 231 (14.0) | |
| Total prehospital time, median (IQR) | 37 (24–63) | 45 (31–69) | < 0.001 |
| Comorbidities | |||
| Heart failure, n (%) | 45 (0.4) | 59 (3.6) | < 0.001 |
| Renal failure, n (%) | 61 (0.5) | 12 (0.7) | 0.071 |
| Cerebrovascular disease, n (%) | 52 (0.4) | 31 (1.9) | < 0.001 |
| Diabetes, n (%) | 546 (4.5) | 264 (16.0) | < 0.001 |
| Respiratory disease, n (%) | 320 (2.6) | 115 (7.0) | < 0.001 |
| Liver cirrhosis, n (%) | 181 (1.5) | 35 (2.1) | 0.062 |
| Dementia, n (%) | 7 (0.1) | 41 (2.5) | < 0.001 |
| SBP in the ED, median (IQR) | 74 (60–90) | 70 (57–83) | < 0.001 |
| RTS, median (IQR) | 6.1 (3.4–7.6) | 6.8 (3.8–7.6) | < 0.001 |
| AIS injured region | |||
| Head ≥ 3, n (%) | 3,989 (32.6) | 634 (38.4) | < 0.001 |
| Face ≥ 3, n (%) | 371 (3.0) | 39 (2.4) | 0.151 |
| Neck ≥ 3, n (%) | 543 (4.4) | 39 (2.4) | 0.008 |
| Thorax ≥ 3, n (%) | 8481 (69.3) | 1192 (76.2) | < 0.001 |
| Abdomen ≥ 3, n (%) | 7110 (58.1) | 758 (47.2) | < 0.001 |
| Spine ≥ 3, n (%) | 1321 (10.8) | 239 (13.5) | 0.001 |
| Upper extremity ≥ 3, n (%) | 1067 (8.7) | 86 (6.0) | < 0.001 |
| Pelvis/lower extremity ≥ 3, n (%) | 5383 (44.0) | 792 (51.5) | < 0.001 |
| Surface ≥ 3, n (%) | 2 (0.001) | 1 (0.001) | 1.000 |
| ISS, median (IQR) | 29 (22–41) | 29 (22–41) | 0.677 |
| Hospital characteristics | |||
| Trauma center level | 0.087 | ||
| Level 1, n (%) | 9108 (74.4) | 1186 (71.7) | |
| Level 2, n (%) | 3133 (25.6) | 467 (28.3) | |
| Teaching status | 0.004 | ||
| University, n (%) | 7602 (62.1) | 957 (57.9) | |
| Community, n (%) | 3752 (30.7) | 565 (34.2) | |
| Non-teaching, n (%) | 887 (7.2) | 131 (7.9) |