Table 2.

Demographic and Clinical Data of Healthy Controls and Patients With Schizophrenia

Parameter	Subject Group
	Controls (n = 18)	Patients (n = 18)
Gender (M/F)	12/6	13/5
Race (C/AA)	16/2	16/2
Age (y)	42.4 (7.8)	43.7 (7.9)
Hollingshead Index	3.4 (1.0)	2.9 (1.4)
Premorbid verbal IQ	111.5 (10.0)	106.2 (11.8)
CPZ equivalent	—	465.7 (436.7)
Duration of illness (y)	—	16.9 (11.8)
PANSS negative (total)	—	14.7 (4.2)
PANSS positive (total)	—	15.3 (7.2)

Note: SDs are shown in parenthesis. M = male, F = female, C = Caucasian, AA = African American, CPZ = chlorpromazine, PANSS = Positive and Negative Syndrome Scale.⁸¹