Structural network communication differences in drug-naive depressed adolescents with non-suicidal self-injury and suicide attempts

Table 1 Demographic and clinical characteristics of depressed adolescents, mean ± SD

Variables	NSSI + SA	NSSI	MDD	HC	P value
Gender (male/female)	6/35	4/23	7/10	12/20	0.03a
Age (years)	15.59 ± 2.16	15.70 ± 2.64	16.41 ± 2.35	20.18 ± 2.67	< 0.001b
Education (years)	8.66 ± 1.77	9.44 ± 2.72	10.05 ± 1.91	14.34 ± 2.42	< 0.001b
HAMD-17	22.83 ± 4.75	18.37 ± 5.04	16.71 ± 5.11	-	< 0.001b
HAMA-14	21.51 ± 7.57	20.44 ± 8.20	17.82 ± 8.40		0.002b

^aP < 0.05, χ² test.

^bP < 0.01, One way analysis of variance.

NSSI: Non-suicidal self-injury; SA: Suicide attempts; MDD: Major depressive disorder; HC: Healthy control; HAMD-17: The 17-item Hamilton Depression Scale; HAMA-14: The 14-item Hamilton Anxiety Scale.