TABLE 3.

Distribution of Full-Scale IQ Scores for Children With and Without SSC

Classification	Control Group		Case Group
	N	%	N	%
Very superior (130+)	19	10.4	8	4.4
Superior (120–129)	33	18.2	14	7.7
High average (110–119)	46	25.3	44	24.2
Average (90–109)	66	36.3	81	44.5
Low average (80–89)	13	7.1	26	14.3
Borderline (70–79)	4	2.2	3	1.7
Extremely low (<69)	1	0.6	6	3.3
Total	182	100	182	100