Psychological Development and Education ›› 2024, Vol. 40 ›› Issue (3): 421-430.doi: 10.16187/j.cnki.issn1001-4918.2024.03.13

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Classification Decision Tree Analysis on Influencing Factors of Suicidal Behavior in College Students

XUE Zhaoxia1, REN Ziyuan1, JING Lei1, LI Hui2   

  1. 1. School of Humanities and Social Sciences, Shanxi Medical University, Taiyuan 030001;
    2. Shanxi Vocational and Technical College of Finance and Trade, Taiyuan 030602
  • Published:2024-05-15

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Abstract: To identify the risk and protective factors of suicide behavior in college students. 11,288 valid college students were investigated by using a gratitude, self-control dual system scale, suicide tests, and some basic demographic information. The classifiation tree method were used to identify the risk factors of suicide attempts. The results showed that: (1) The incidence of suicidal ideation was 17.1% within one year, and the incidence of suicidal behavior was 3.8% within six months; (2) The results of classified decision tree analysis showed that suicide ideation was the root node, and gratitude, impulsivity, control, family class, and only-child or not were all important child nodes (AUC=0.959). The main conclusions are as follows: (1) Suicidal ideation is the most important proximal risk factor of suicide behavior in college students, impulsivity is the medium risk factor, gratitude and moderate control are the distal protective factors, respectively; (2) The risk of transition from suicidal ideation to suicidal behavior is higher among college students from low social class, and among non-only-child college students from middle and high social class families.

Key words: college students, suicide behavior, gratitude, self-control, classification decision tree

CLC Number: 

  • B844
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