Table 1.

Sociodemographic characteristics of the groups

Variable	First episode psychosis group (n = 29)	Chronic schizophrenia group (n = 30)	Healthy control group (n = 29)	Significance
Age (yr)	31.14 ± 12.12	33.87 ± 10.49	30.21 ± 8.13	p = 0.374a, F = 0.995
Sex (female/male)	12/17	13/17	16/13	p = 0.521b, χ2 = 1.303
BMI (kg/m2)	24.89 ± 5.14	26.59 ± 4.71	23.94 ± 3.94	p = 0.089a, F = 2.491
Total PANSS	101.90 ± 16.35	92.07 ± 21.56	-	p = 0.046c,*, U = 303.50

Values are presented as mean ± standard deviation or number only.

BMI, body mass index; PANSS, Positive and Negative Syndrome Scale.

^aOne-way ANOVA test,

^bPearson’s chi-square test,

^cMann–Whitney U test;

^*p < 0.05.