Demographics of patients with isolated traumatic brain injury
| Patients, n | 30 710 |
| Age (years, mean±SD) | 51.7±20.9 |
| Sex (male) | 70.7% |
| ISS (IQR) | 19.5 (14–26) |
| AIS-Head | n (%) |
| 1 | 131 (0.4) |
| 2 | 369 (1.2) |
| 3 | 4233 (13.8) |
| 4 | 12 653 (41.2) |
| 5 | 13 080 (42.6) |
| Subarachnoid hemorrhage | 14 409 (46.9) |
| Subdural hemorrhage | 18 119 (59.0) |
| Epidural hematoma | 2290 (7.5) |
| Craniotomy | 4235 (13.8) |
| Craniectomy | 1511 (4.9) |
| Mortality | 8493 (27.7) |
AIS, Abbreviated Injury Scale; ISS, Injury Severity Score.