Aetiology by seizure status group, n=214
| n | Seizures on EEG | No seizures on EEG | ||
| Did not receive AED before EEG start (n=115) | Received AED before EEG start (n=24) | |||
| n (%) | n (%) | n (%) | ||
| HIE grade | ||||
| Mild | 50 | 0 (0.0) | 48 (41.7) | 2 (8.3) |
| Moderate | 59 | 27 (36.0) | 23 (20.0) | 9 (37.5) |
| Severe | 24 | 17 (22.7) | 3 (2.6) | 4 (16.7) |
| Metabolic/genetic disorder | 20 | 16 (21.3) | 4 (3.5) | 0 (0.0) |
| Stroke | 18 | 10 (13.3) | 5 (4.3) | 3 (12.5) |
| Suspected seizures—unconfirmed | 12 | 0 (0.0) | 9 (7.8) | 3 (12.5) |
| Perinatal asphyxia without clinical encephalopathy | 7 | 0 (0.0) | 7 (6.1) | 0 (0.0) |
| Sepsis/meningitis | 6 | 2 (2.7) | 3 (2.6) | 1 (4.2) |
| Intracranial haemorrhage | 5 | 0 (0.0) | 4 (3.5) | 1 (4.2) |
| Other | 13 | 3 (4.0) | 9 (7.8) | 1 (4.2) |