Outcomes of Disconnective Surgery in Intractable Pediatric Hemispheric and Subhemispheric Epilepsy

Table 2

Presurgery predictors of age, seizures, and cognition on postsurgery seizure outcome.

Variables	Engels Class I; (𝑛=31)		Engels Class II–IV; (𝑛=3)		Statistics Z value	P Value
	Mean	SD	Mean	SD
Age at the time of surgery	8.10	4.18	6.43	7.64	−0.76	0.44
Age of seizure onset	4.078	3.84	0.07	0.03	−2.15	0.03
Frequency of seizures/day	113.33	269.29	6.50	2.12	−0.17	0.86
Total duration of seizures before surgery	4.11	3.39	2.05	2.75	−1.12	0.26
IQ/DQ (pre op)	59.20	17.97	35.00	0.01	−1.41	0.15