Table 1.
Predictors of SOZ localization.
| Feature | iEEG (n = 329) | |||
|---|---|---|---|---|
| p‐value | OR | SOZ localized | SOZ not localized | |
| Univariate analyses | ||||
| Age at epilepsy diagnosis (years) | 0.018 | 0.97 (0.95, 0.99) | 15 | 19 |
| Duration of epilepsy | 0.285 | |||
| Age at surgery | 0.159 | |||
| Pre‐op number of ASMs | 0.111 | |||
| Pre‐op seizure frequency | 0.877 | |||
| Male sex | 0.179 | |||
| Presence of GTCs | 0.580 | |||
| Prior invasive monitoring | 0.275 | |||
| Prior resective intervention | 0.206 | |||
| Prior neuromodulation | 0.824 | |||
| Pre‐op MRI abnormal | 0.286 | |||
| Pre‐op PET carried out | 0.018 | 2.3 (1.2, 4.6) | 76% | 61% |
| Localization on scalp EEG | <0.0001 | 3.6 (1.8, 7.2) | 77% | 50% |
| Scalp EEG—unilateral localization | <0.001 | 4.0 (1.9, 8.5) | 64% | 31% |
| iEEG investigation—unilateral | 0.073 | |||
| iEEG length of monitoring | 0.460 | |||
| Multivariable analyses. AUC = 0.701 | ||||
| Age at epilepsy diagnosis (years) | 0.021 | 0.97 (0.95, 0.99) | 15 | 19 |
| Scalp EEG—unilateral localization | 0.001 | 3.8 (1.8, 8.3) | 64% | 31% |
All bolded are p < 0.05 (highlighted for viewability)