Table 2.
Epilepsy characteristics according to genotype
| Deletion | Nondeletion | Total | |
|---|---|---|---|
| N | 62 | 38 | 100 |
| Epilepsy,a n (% of genetic subgroup)** | 57 (92) | 25 (66) | 82 |
| Age of first seizure, mean in months (SD)b , * | 24 (15.6) | 52.9 (31.9) | 32 (24.8) |
| Absence seizuresa, n (% of genetic subgroup) | 47 (76) | 20 (53) | 67 |
| Tonic–clonic seizuresa, n (% of genetic subgroup) | 30 (48) | 13 (34) | 43 |
| Atonic seizuresa, n (% of genetic subgroup) | 12 (19) | 9 (24) | 21 |
| Nonconvulsive status epilepticus, n (% of genetic subgroup)* | 16 (25) | 3 (0.1) | 19 |
| Convulsive status epilepticus, n (% of genetic subgroup) | 5 (0.1) | 0 (0) | 5 |
| Epilepsy in remission with or without AEDa, n (% of genetic subgroup) | 23 (40) | 8 (32) | 31 |
Abbreviation: AED, antiepileptic drugs.
a
Defined as now or earlier.
b
Data from two deletion children missing.
*
Deletion versus nondeletion p < .05.
**
Deletion versus nondeletion p < .01.