Table 3.

Cognitive assessments pre-and-postoperatively. Qualitative assessments reflect parents and neuropsychologist.

Patient	Age (years)	Preop.	Postop.	Qualitative
1	7.5	71a	77	NC-I
2	14.4	20b	29	NC
3	12.2	NT	(I) 65 and (II) 73a	I
4	12.7	58a	–	–
5	2.5	NT	81c
6	1.6	60c	62–72	NC
7	1.7	55c	55	NC
8	15.5	40a	42	NC
9	2.9	NT	86c	I

NC = no change; I = improved; NC-I = no change to improved; NT = not testable.

^aWechsler intelligence scale for children (WISCS) IV.

^bPeabody picture vocabulary test – three and four (PPVT-III or PPVT-IV).

^cBayley cognitive score.

^dWechsler preschool and primary scale of intelligence, third edition (WPPSI-III).