A randomised study on the effectiveness of prophylactic phenytoin for preventing post-traumatic seizure: cranial CT scan findings
| Morphology N (%) | Total N=56 | Phenytoin N=29 | Non-phenytoin N=27 | P value |
| Depressed skull fracture | 3 (5.4) | 2 (6.9) | 1 (3.7) | 1.000 |
| Subdural haematoma | 12 (21.4) | 5 (17.2) | 7 (25.9) | 0.536 |
| Extradural haematoma | 9 (16.1) | 3 (10.3) | 6 (22.2) | 0.293 |
| Contusions | 24 (42.9) | 11 (37.9) | 13 (48.1) | 0.636 |
| Intracerebral haemorrhage | 10 (17.9) | 2 (6.9) | 8 (29.6) | 0.045 |