Table 2.

Demographic and clinical characteristics of participants.

Characteristics	MDD (N = 100)	NC (N = 100)	t/χ2	P-value
Age (years)	29.46 ± 9.34§	29.59 ± 10.33	−0.09	0.93†
Gender (F/M)	66/34	59/41	1.05	0.31‡
Education (years)	12.46 ± 3.22§	12.88 ± 2.77	−0.09	0.32
Illness duration (months)	8.64 ± 10.86§	NA	NA	NA
HDRS-17	22.15 ± 3.18§	NA	NA	NA

MDD, major depressive disorder; NC, normal control; HDRS-17, 17-item hamilton depression rating scale.

^§Mean ± standard deviation.

^†The P-values were obtained through a two-sample t-test.

^‡The P-value was obtained through a chi-squared test.