Cognitive dysfunction in schizophrenia patients caused by down-regulation of γ-aminobutyric acid receptor subunits

Table 1 Comparison of general data of two groups

Index	Case group (n = 126)	Control group (n = 126)	χ2/t	P value
Age (yr)	35.32 ± 4.81	36.75 ± 4.96	1.311	0.162
Sex (n)
Male	56	59	1.035	0.291
Female	70	67
BMI (kg/m2)	23.50 ± 3.12	23.36 ± 3.15	0.675	1.503
Education level			0.096	9.721
Illiterate	16	18
Primary school	26	23
Junior high school	49	51
High school and above	35	34
Living environment			0.853	0.352
In the city	65	64
In the countryside	61	62
The types of schizophrenia
Paranoid type	126	-
BPRS scores		-	0.263	0.639
Positive symptoms	-	16.19 ± 3.82
Negative symptoms	-	8.35 ± 2.39
Total BPRS scores	-	46.61 ± 4.53
Drinking			1.132	0.214
Yes	62	61
No	64	65
Smoking history			1.344	0.202
Yes	55	52
No	71	74
Complications			0.228	0.893
Diabetes	43	45	0.753	0.372
Hypertension	56	52

BMI: Body mass index; BPRS: Brief Psychiatric Rating Scale.