Age (years) at seizure onset in relation to histopathological diagnosis
| Median | Range (P25–P75) | |
|---|---|---|
| Parenchymal malformations | 3.0 | (0.5–7.0) |
| Major malformations | 0.7 | (0.3–7.0) |
| Microdysgenesis | 3.5 | (0.8–6.8) |
| Vascular malformations | 24.5 | (17.5–36.0) |
| Low grade tumours | 9.3 | (4.3–18.8) |
| Hippocampal sclerosis | 22.5 | (6.5–26.5) |
| Atrophic-gliotic lesions | 12.0 | (4.0–17.0) |
P25=25th percentile; P75=75th percentile.