Frequency of each IGE subsyndrome in the study population
| Type of epilepsy | n (%) |
|---|---|
| CAE, childhood absence epilepsy; JAE, juvenile absence epilepsy; JME, juvenile myoclonic epilepsy. | |
| Absence epilepsies (n = 288) | |
| Childhood absence epilepsy | 127 (13.2%) |
| Juvenile absence epilepsy | 108 (11.2%) |
| Idiopathic absence epilepsy | 46 (4.8%) |
| Eyelid myoclonia with absences | 7 (0.7%) |
| Myoclonic epilepsies (n = 424) | |
| Juvenile myoclonic epilepsy | 357 (37.1%) |
| Idiopathic myoclonic epilepsy | 31 (3.2%) |
| CAE evolving to JME | 25 (2.6%) |
| JAE/JME overlap | 8 (0.8%) |
| Benign myoclonic epilepsy of infancy | 3 (0.3%) |
| Other syndromes (n = 250) | |
| Tonic–clonic seizures on awakening | 54 (6%) |
| Tonic–clonic seizures only | 189 (19.6%) |
| Pure photosensitive epilepsy | 7 (0.7%) |
| Total | 962 |