反刍思维与安全感在青少年抑郁症患者冲动性人格和自杀风险间的链式中介作用

Relationship between impulsive personality traits and suicide risk in adolescents with depression:the chain mediating role of rumination and sense of security

目的探讨冲动性人格对青少年抑郁症患者自杀风险的影响,以及反刍思维和安全感在两者间的链式中介效应。方法采用反刍思维量表、安全感问卷、Barratt冲动性量表和Beck自杀意念量表对211例青少年抑郁症患者进行调查。构建反刍思维和安全感在冲动性人格与自杀风险之间的链式中介效应的结构方程模型并进行中介效应检验。结果青少年抑郁症患者自杀风险评分(24.65±3.27)分,冲动性人格评分(107.65±14.16)分,反刍思维评分(57.28±7.14)分,安全感评分(40.26±6.22)分。反刍思维和安全感在冲动性人格与自杀风险之间的总间接效应为44.33%,其中反刍思维的中介效应占20.10%,安全感的中介效应占17.53%,反刍思维、安全感的链式中介效应占6.70%。结论冲动性人格不仅直接影响青少年抑郁症患者的自杀风险,还通过反刍思维和安全感间接影响自杀风险;可以通过减少反刍思维和增加安全感,减少冲动性人格对青少年抑郁症患者自杀风险的影响。

Objective To exploring the impact of impulsive personality traits on suicide risk in adolescents with depression and the chain mediating role of rumination and sense of security.Methods A total of 211 adolescents with depression were invited to complete the Ruminative Responses Scale,the Security Questionnaire,the Barratt Impulsiveness Scale and the Beck Scale for Suicide Ideation.Structural equation modeling was used to test hypothesized relationships among variables.Results The sample scored(24.65±3.27)for suicide risk,(107.65±14.16)for impulsive personality traits,(57.28±7.14)for ruminative thinking,and(40.26±6.22)for sense of security.The total indirect effect of ruminative thinking and sense of security on the relationship between impulsive personality traits and suicide risk was 44.33%,of which 20.10%was mediated by ruminative thinking,17.53%by sense of security,and 6.70%by the chain effect.Conclusion Impulsive personality traits not only directly but also indirectly,via ruminative thinking and sense of security,affects suicide risk in adolescents with depression.The impact of impulsive personality traits on suicide risk can be attenuated by modulating rumination and enhancing sense of security.