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. Author manuscript; available in PMC: 2012 Apr 1.
Published in final edited form as: Schizophr Res. 2010 Dec 13;127(1-3):171–177. doi: 10.1016/j.schres.2010.11.011

Table 1.

Demographic and clinical data

Characteristic Group; mean (SD)
Schizophrenia, n = 25 Control, n = 22 Statistical test p value
Demographic
Age, yr 45.9 (11.9) 44.5 (8.6) t45 = −0.43 0.67
Education, yr 13.0 (1.3) 14.9 (1.8) t45 = 4.07 < 0.001
Parental Education, yr 11.9 (2.5) 13.3 (3.0) t45 = 1.70 0.10
Sex, male:female 20:5 17:5 χ2 = 0.05 0.82
Ethnicity
 African American 9 5
 Asian 0 3
 Hispanic 10 2
 White 4 12
 Other 2 0
Clinical
BPRS1 total score 40.6 (7.5)
BPRS positive2 2.0 (1.0)
BPRS negative2 1.9 (0.8)
BPRS depression/anxiety2 1.9 (0.6)
Age of onset, yr 23.7 (6.5)
Number of hospitalizations 2.3 (1.3)
1

BPRS = Brief Psychiatric Rating Scale;

2

Mean score of each BPRS subscale was calculated by dividing the total score by the number of items included in the subscale.