Altered fractional amplitude of low-frequency fluctuations in the superior temporal gyrus: a resting-state fMRI study in anxious depression

Table 1 Demographic and clinical characteristics of all subjects

Variables(mean ± SD)	AnD	NAnD	HCs	t/F	p value
Variables(mean ± SD)	(n = 60)	(n = 38)	(n = 60)	t/F	p value
Sex(male/female)	28/32	19/19	34/26	1.233	0.540^#
Age(years)	33.53 ± 8.59	31.50 ± 8.97	33.55 ± 9.21	0.757	0.471^*
Education lever(years)	13.72 ± 2.96	14.13 ± 3.02	14.60 ± 1.72	4.044	0.132^∆
Duration of illness(month)	7.45 ± 9.50	7.87 ± 9.78		0.044	0.834^**
HAMD-17	26.35 ± 4.78	20.87 ± 3.23		6.768	0.000^**
Anxiety/somatization factor	9.25 ± 1.65	5.03 ± 1.05		15.454	0.000^**
Cognitive disturbance factor	4.77 ± 2.35	4.45 ± 2.09		0.684	0.495^**
Retardation factor	8.17 ± 1.51	7.53 ± 1.84		1.878	0.063^**
Weight factor	0.95 ± 0.89	0.76 ± 0.82		1.043	0.300^**
Diurnal variation factor	0.50 ± 0.72	0.53 ± 0.73		-0.175	0.861^**
Sleep disturbance factor	3.93 ± 1.76	3.76 ± 2.06		0.436	0.664^**
Hopelessness factor	5.25 ± 2.03	4.92 ± 2.57		0.668	0.507^**
HAMD-17-anxiety/somatization Factor	17.10 ± 4.15	15.84 ± 3.16		1.567	0.120^**
HAMA	25.72 ± 7.29	16.21 ± 3.93		8.360	0.000^**
FD	0.11 ± 0.06	0.11 ± 0.07	0.11 ± 0.06	0.068	0.93^*

Abbreviations: AnD, anxious depression; NAnD, nonanxious depression; HCs, healthy controls; SD, standard deviation; HAMD-17, 17-item Hamilton Depression Rating Scale; HAMA, Hamilton Anxiety Scale; FD, frame-wise displacement
# p values for chi-square test
* p values for one-way ANOVA.
^∆ p values for nonparametric test
** p values for two-sample t-tests

ISSN: 1471-244X