Table 1 Demographics of patients with schizophrenia and healthy controls.

Age (years) (mean ± SD)

44.37 ± 6.83

43.78 ± 7.17

0.86

0.389^a

BMI (kg/m²) (mean ± SD)

24.40 ± 3.48

23.95 ± 3.36

1.33

0.184^a

 Male

132 (64.7%)

135 (62.5%)

 Female

72 (35.3%)

81 (37.5%)

0.22

0.639^b

 Hans

86 (42.2%)

76 (35.2%)

 Uyghurs

118 (57.8%)

140 (64.8%)

2.15

0.142^b

 Urban

95 (46.6%)

101 (46.8%)

 Rural

109 (53.4%)

115 (53.2%)

0.00

0.969^b

 Elementary school

28 (13.7%)

32 (14.8%)

 Middle school

89 (43.6%)

86 (39.8%)

 High school

75 (36.8%)

81 (37.5%)

 University and above

12 (5.9%)

17 (7.9%)

1.07

0.785^b

 Unmarried

71 (34.8%)

70 (32.4%)

 Married

78 (38.2%)

85 (39.3%)

 Divorced

53 (26.0%)

58 (26.9%)

 Widowed

2 (1.0%)

3 (1.4%)

0.47

0.946^c

 Yes

59 (28.9%)

64 (29.6%)

 No

145 (71.1%)

152 (70.4%)

0.03

0.873^b

Age of onset (years) (mean ± SD)

22.43 ± 3.20

Duration of illness (years) (mean ± SD)

21.94 ± 7.13

Equivalent dose of chlorpromazine (mg/day) (mean ± SD)

592.84 ± 164.90

Equivalent dose of lorazepam (mg/day) (mean ± SD)

1.58 ± 0.70