Demographics, severity of injury, pretraumatic and post-traumatic circumstances and comorbidities
| Exposed | Control | ||||
| N | % (95 % CI) | N | % (95 % CI) | ||
| Age | 18–39 | 35 691 | 31.9 (31.6 to 32.2) | 103 908 | 31.9 (31.7 to 32.0) |
| 40–59 | 24 882 | 22.2 (22.0 to 22.5) | 73 198 | 22.5 (22.3 to 22.6) | |
| 60–79 | 27 547 | 24.6 (24.4 to 24.9) | 79 917 | 24.5 (24.4 to 24.7) | |
| 79< | 23 827 | 21.3 (21.0 to 21.5) | 68 858 | 21.1 (21.0 to 21.3) | |
| Sex | Male | 65 633 | 58.6 (58.3 to 58.9) | 190 606 | 58.5 (58.3 to 58.7) |
| Female | 46 314 | 41.4 (41.1 to 41.7) | 135 275 | 41.5 (41.3 to 41.7) | |
| Type of injury | Control | 0 | 0.0 | 325 881 | 100 |
| Mild Injury | 76 329 | 68.2 (67.9 to 68.5) | 0 | 0.0 | |
| Fracture | 6081 | 5.4 (5.3 to 5.6) | 0 | 0.0 | |
| Extracerebral Injury | 16 492 | 14.7 (14.5 to 14.9) | 0 | 0.0 | |
| Diffuse Cerebral Injury | 8778 | 7.8 (7.7 to 8.0) | 0 | 0.0 | |
| Focal Cerebral Injury | 4267 | 3.8 (3.7 to 3.9) | 0 | 0.0 | |
| Seizure during hospitalisation | 363 | 0.3 (0.3 to 0.4) | 0 | 0.0 | |
| Mechanical ventilation | 1367 | 1.2 (1.2 to 1.3) | 27 | 0.0 (0.0 to 0.0) | |
| Stroke | 21 429 | 19.1 (18.9 to 19.4) | 33 614 | 10.3 (10.2 to 10.4) | |
| Cerebral infection | 1315 | 1.2 (1.1 to 1.2) | 2064 | 0.6 (0.6 to 0.7) | |
| Tumour | 1433 | 1.3 (1.2 to 1.3) | 2844 | 0.9 (0.8 to 0.9) | |