Seizure occurrence rates in patients with epilepsy during pregnancy
| Seizure rate | Relative risk (95% CI) | |
| Ongoing seizures versus >1 year of seizure-free pre-pregnancy | 78.4% vs 22.3% | 3.51 (3.13 to 3.94) |
| Antiseizure medication polytherapy versus monotherapy | 62.6% vs 37.5% | 1.67 (1.51 to 1.85) |
| Generalised versus focal epilepsy | 37.1% vs 48% | 0.64 (0.53 to 0.71) |