Assessing the contributions of gender, clinical symptoms, and psychometric traits to non-suicidal self-injury behaviors in Chinese adolescents: a nomogram approach

Table 1 Demographic and clinical characteristics of participants

Variables	N	%	M	SD
Diagnose
Depressive disorder	1986	84.76
Bipolar disorder	357	15.24
Family history of mental disorders
No	2121	90.52
Yes	222	9.48
Age			14.99	1.65
Gender
Male	517	22.07
Female	1826	77.93
Education years			9.17	1.76
Location
Urban	1580	67.43
Rural	763	32.57
Education level - Father
Primary school or below	301	12.85
Junior high school	882	37.64
High school	527	22.49
College or above	633	27.01
Education level - Mother
Primary school or below	532	22.70
Junior high school	809	34.53
High school	453	19.33
College or above	549	23.43
Physical disease
Yes	65	2.77
No	2278	97.23
Previously diagnosed mental disorder
No	1958	83.56
Yes	385	16.43
Hallucination
No	1471	62.78
Yes	872	37.22
Delusion
No	1472	62.83
Yes	871	37.17
Perceived social support			47.07	16.85
Perceived Stress			14.76	3.40
Depression			16.86	7.17
Sleep disorder			12.59	3.68
Borderline personality			81.22	17.81
Alexithymia			67.84	10.57
Childhood trauma			50.58	13.37
Peer victimization			11.35	9.39
NSSI
No	625	26.68
Yes	1718	73.32

ISSN: 1753-2000