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. 2013 Jul 1;40(4):835–844. doi: 10.1093/schbul/sbt089

Table 2.

Demographic Data for Schizophrenia and Control Groups

	Patient, n = 99	Control, n = 131
Variable	Mean (SD)	Mean (SD)	Group Comparison
Age (years)	40.4 (11.7)	38.4 (12.3)	t = −1.24, P = .215
Gender (% males)	56.6	52.7	Χ ² = 0.35, P = .557
Race (% Euro-American)	60.0	48.1	Χ ² = 3.00, P = .083
Personal SES	24.0 (9.0)	33.1 (11.5)	t = 6.73, P < .001
Parental SES	45.6 (12.8)	43.5 (12.5)	t = −1.21, P = .227

Note : SES, socioeconomic status. SES is measured by the Barratt Simplified Measure of Social Status based on the Hollingshead Index.