Table 1 Demographic profiles in patients with schizophrenia and controls.

From: Neuregulin 3 rs10748842 polymorphism contributes to the effect of body mass index on cognitive impairment in patients with schizophrenia

Variable

Patients (N = 625)

Controls (N = 400)

Statistic

p

Age (years)

45.03 ± 10.19

44.73 ± 13.50

0.37

0.71

Gender (male)

512 (81.9%)

157 (39.3%)

159.90

<0.0001

Education (years)

8.45 ± 3.65

9.73 ± 5.60

4.06

<0.0001

BMI

23.97 ± 4.45

25.16 ± 4.26

4.20

<0.0001

Onset age

26.60 ± 20.19

Illness duration (years)

21.14 ± 9.90

Atypical antipsychotic (n)

439

Typical antipsychotic (n)

186

Daily dose (mg/day) (chlorpromazine equivalents)

390.35 ± 295.35

Antipsychotic treatment duration (months)

31.37 ± 46.64

PANSS score

 

Positive symptoms

11.92 ± 6.26

Negative symptoms

20.14 ± 8.69

General psychopathology

25.15 ± 7.11

Total score

57.20 ± 16.51