Table 1. Demographics of Imaging-Genetic Sample.

	Controls (N=115)		Schizophrenia (N=80)		t193	P-value
	Mean	SD	Mean	SD
Age (years)	46.79	19.32	45.49	16.00	0.49	0.63
IQ (WTAR score)	117.92	8.11	110.64	15.16	4.24	<0.05
Education (years)	15.32	1.95	13.25	2.64	6.27	<0.05
Highest level of education (parent)	5.16	1.81	4.18	2.26	3.38	<0.05
	Count	Frequency	Count	Frequency	χ2	P
Handedness (R)	105	92.1%	71	89.9%	0.23	0.59
Sex (M)	61	53.0%	48	60.0%	0.93	0.38