Risk factors for recurrent febrile convulsions and subsequent development of epilepsy in patients with or without primary human herpesvirus 6 (HHV-6) infection at the first febrile convulsive episode
| All infants with first febrile convulsions episode | Infants younger than 1 year with first febrile convulsions episode | ||||||
|---|---|---|---|---|---|---|---|
| Primary HHV-6 infection (n = 19) | No primary HHV-6 infection (n = 60) | p Value | Primary HHV-6 infection (n = 12) | No primary HHV-6 infection (n = 10) | p Value | ||
| Recurrent febrile convulsions | |||||||
| Under 6 months | 1 | 1 | NS | 1 | 1 | NS | |
| Family history of febrile convulsions | 6 | 10 | NS | 4 | 1 | NS | |
| Epilepsy | |||||||
| Mental retardation | 0 | 1 | NS | 0 | 1 | NS | |
| Family history of epilepsy | 0 | 0 | NS | 0 | 0 | NS | |
| Atypical seizures2-150 | 11 | 13 | < 0.01 | 8 | 2 | < 0.05 | |
↵2-150 Partial seizures and/or long lasting seizures more than 15–20 minutes in duration and/or clustering (two or more) seizures within 24 hours after onset.
NS, not significant.