Cox proportional HR of epilepsy compared with control, univariably and with multivariable adjustment for age, sex and central nervous system comorbidities, (95% CI)
| Type of injury | Univariable | Multivariable |
| Control | ref | ref |
| Any injury | 4.7 (4.4 to 4.9) | 3.9 (3.7 to 4.1) |
| Mild | 3.0 (2.8 to 3.2) | 2.9 (2.7 to 3.1) |
| Fracture | 3.6 (3.1 to 4.2) | 3.3 (2.8 to 3.8) |
| Extracerebral injury | 9.3 (8.7 to 10.0) | 4.5 (4.2 to 4.9) |
| Diffuse cerebral injury | 9.6 (8.8 to 10.5) | 7.4 (6.8 to 8.1) |
| Focal cerebral injury | 16.0 (14.5 to 17.5) | 10.7 (9.7 to 11.8) |