Table 1.

Demographics of patients with schizophrenia and healthy controls (mean ± SD)

	patients(n = 40)	controls(n = 40)	t/χ²	P
Gender (Male/Female)	21/19	14/26	2.489	0.115a
Age(years)	46.80 ± 7.68	44.45 ± 7.29	1.403	0.165b
BMI(kg/m2)	23.236 ± 1.99	22.754 ± 2.03	1.072	0.287 b
Education(years)	10.90 ± 2.24	13.30 ± 2.54	4.479	< 0.001b
Equivalent dose of chlorpromazine(mg/d)	419.75 ± 163.31
P subscores	14.45 ± 4.64
N subscores	18.85 ± 6.42
G subscores	34.50 ± 7.36
PANSS total score	67.80 ± 14.66

BMI, body mass index

PANSS, positive and negative syndrome scale

^aχ² test

^bStudent’s t-test