Table 1.

Patient demographics and preoperative evaluation.

	SelAH (n = 21)	ATL (n = 75)	P value
Gender (%female)	57	53	0.76
Age at first seizure (Yr)	16.1	13.9	0.52
Age at surgery (Yr)	36	41.9	0.03
History of febrile seizures (%)	6 (29%)	39 (52%)	0.06
Freq. of seizures at time of surgery (per month)	8	9.7	0.40
On multiple AEDs (%)	19 (90%)	62 (83%)	0.60
Initial EEG lateralizing (%)	13 (60%)	45 (60%)	0.99
Contralateral ictal propagation in EMU (%)	3 (14%)	12 (16%)	0.85
Bilateral interictal abnormalities in EMU (%)	3 (14%)	21 (28%)	0.20
Invasive recording needed (%)	1 (5%)	18 (24%)	0.05

P values < 0.05 were considered significant.

AED: Antiepileptic drug; EMU: Epilepsy Monitoring Unit.