title: [Study on the detection rate and risk factors regarding non-suicidal self-injurious behavior in middle school students].
abstract: OBJECTIVE
  To understand the prevalence and risk factors of non-suicidal self-injury in middle school students.
  
  
  METHODS
  1312 middle school students of Pengzhou and Santai were selected to fill in a Risky Behavior Questionnaire for Adolescence (RBQ-A), Family Environment Scale (FES), Center for Epidemiological Survey, Depression Scale (CES-D), Adolescent Self-Rating Life Events Check List (ASLEC), Social Support Scale for Adolescents (SSSA) and self-administered questionnaire. In all the research subjects, 1288 were qualified for the study in April 2011 before the risk factors for non-suicidal self-injury were identified by logistic regression.
  
  
  RESULTS
  In 1288 middle school students, 22.67% had a history of non-suicidal self-injury, with 22.70% in boys and 22.64% in girls. 63.36% of students had injured themselves through variously ways, more seen in boys (26.88%) than in girls (11.36%) who cut or burnt themselves. The scores of ASLEC and CES-D in non-suicidal self-injury group appeared higher than that in the control group and the score of SSSA was found higher in the control group. The main risk factors for non-suicidal self-injuries were family conflict, depressive emotion, negative life events and receiving less social support.
  
  
  CONCLUSIONS
  The prevalence of non-suicidal self-injury among middle school students in Pengzhou was high, which called for more attention.
authors.affiliation: Mental Health Center, West China Hospital, Sichuan University, Chengdu 610041, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Yan
authors.forename: Cui-zhen
authors.initials: CZ
authors.lastname: Zhu
authors.forename: Ming-jing
authors.initials: MJ
authors.lastname: Situ
authors.forename: Na
authors.initials: N
authors.lastname: DU
authors.forename: Yi
authors.initials: Y
authors.lastname: Huang
mesh_terms: D000293:Adolescent; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D012307:Risk Factors; D016728:Self-Injurious Behavior / Q000453:epidemiology*; D013334:Students / Q000706:statistics & numerical data