Table 1.
Patient profile
| n | 65 |
| Mean age, years | 14.6 |
| Age range, years | 5–44 |
| Interval between surgery and postoperative language assessment, months (IQR) | 3.6 (2.3) |
| Female, % | 47.7 |
| Right-handedness, % | 81.5 |
| Language-dominant hemisphere, % | Left: 92.3 |
| Side of resected hemisphere, % | Left: 58.5 |
| Mean number of pre/postoperative anti-epileptic drugs | 2.3/2.0 |
| Seizure onset zone, n (%) | |
| Frontal | 17 (26.2) |
| Temporal | 32 (49.2) |
| Parietal | 22 (33.8) |
| Occipital | 13 (20.0) |
| Not availablea | 7 (10.8) |
| MRI-visible cortical lesion, n (%) | 37 (56.9) |
| Aetiology, n (%) | |
| Tumour | 13 (20.0) |
| Dysplasia | 20 (30.8) |
| Hippocampal sclerosis | 4 (6.2) |
| Inflammation | 2 (3.1) |
| Gliosis alone | 27 (41.5) |
IQR = interquartile range.
aThe extent of cortical resection was guided by interictal epileptiform discharges as well as the MRI lesion.