HR for epilepsy depending on risk factors among exposed, univariably and with multivariable adjustment for age, sex and central nervous system comorbidities
| Univariable | Multivariable | |
| Male sex | 1.2 (1.1 to 1.3) | 1.2 (1.1 to 1.3) |
| Age, continuous | 1.0 (1.0 to 1.0) | 1.0 (1.0 to 1.0) |
| Severity of injury: | ||
| Mild | ref | ref |
| Fracture | 1.2 (1.0 to 1.4) | 1.1 (0.9 to 1.3) |
| Extracerebral injury | 3.0 (2.7 to 3.2) | 1.8 (1.6 to 1.9) |
| Diffuse cerebral injury | 3.2 (2.9 to 3.5) | 2.5 (2.3 to 2.7) |
| Focal cerebral injury | 5.2 (4.8 to 5.8) | 3.7 (3.3 to 4.1) |
| Severity | ||
| Mechanical ventilation | 5.6 (4.9 to 6.3) | 2.8 (2.5 to 3.3) |
| Seizure index adm | 10.7 (8.8 to 13.0) | 7.2 (5.9 to 8.8) |