Table 1.

Demographic, clinical characteristics, and pro-inflammatory cytokines of participants.

Variables	AD (n = 43)	NAD (n = 68)	HC (n = 53)	T/F/χ2	p-values
Age (years)	30.91±9.76	28.25±7.06	31.23±9.09	2.23	0.245a
Sex (male/female)	14/29	17/51	21/32	2.96	0.228b
Education (years)	15.81±2.17	16.03±2.21	15.57±2.28	0.65	0.525c
Mean FD	0.07±0.05	0.07±0.06	0.08±0.07	0.13	0.875c
17-item HAMD score	23.51±4.32	19.54±3.32	N/A	5.45	<0.001d
Anxiety/somatization	8.35±1.23	4.40±1.39	N/A	15.20	<0.001d
Log IL-1β (log10 pg/ml)	1.26±0.64	1.17±0.50	1.06±0.33	0.74	0.692a
Log IL-6 (log10 pg/ml)	1.67±0.74	1.52±0.59	1.28±0.43	9.73	0.008a
Log TNF-α (log10 pg/ml)	2.39±0.56	2.35±0.45	2.22±0.41	1.70	0.185c

Abbreviations: AD, anxious depression; NAD, non-anxious depression; HC, healthy controls; FD, framewise displacement; HAMD, Hamilton Rating Scale for Depression; IL, Interleukin; TNF, Tumor Necrosis Factor.

^aKruskal-Wallis test.

^bChi-square test.

^cOne-way ANOVA.

^dTwo-sample t-test.