Table 4.

Group demographics

	STAR group (n = 20)	NSA group (n = 24)	t-test	p
Age at first study (years)	3.909 +/− 1.248	4.522 +/− 1.800	1.29	n.s.
Time between studies (years)	2.136 +/− 1.609	1.904 +/− 0.989	0.49	n.s.
Age at regression (months)	18.925 +/− 9.928
Length of regression (weeks)	20.053 +/− 12.70
Length of treatment (months)	9.125 +/− 3.26
Gender	18 males, 2 females	18 males, 6 females		n.s.
Handedness	18 right, 2 left	23 right,1 left		n.s.
Subjects with history of regression (n)	20 of 20	7 of 24		0.0001