. Author manuscript; available in PMC: 2011 Feb 21.

Published in final edited form as: J Neurosurg. 2010 Jul;113(1):32–38. doi: 10.3171/2009.12.JNS091073

TABLE 4.

Postresection seizure outcomes^*

		Depth Electrode Placement
Seizure Frequency^†	Total	Group A	Group B
Class I (seizure free or aura only)	16 (59)	9 (56)	7 (64)
Class II (significant improvement)	5 (19)	2 (13)	3 (27)
Classes I & II combined (good outcome)	21 (78)	11 (69)	10 (91)
Class III (improvement)	0	0	0
Class IV (no significant reduction)	6 (22)	5 (31)	1 (9)
Classes III & IV combined (poor outcome)	6 (22)	5 (31)	1 (9)

All data presented as number of patients (%).

^†

None of the Engel Class differences were significant between groups using chi-square analysis.