Baer Margaret M, Tull Matthew T, Gratz Kim L
Arch Suicide Res. 2022 Jul-Sep;26(3):1520-1540. doi: 10.1080/13811118.2021.1931595. Epub 2021 Sep 16.
Although substance use has been linked to both suicidal ideation and suicide attempts, the factors underlying these relations remain unclear. The Interpersonal-Psychological Theory of Suicide (ITS) provides a framework for understanding how substance use may increase suicide risk. The purpose of the current study was to examine if frequency of substance use is indirectly related to suicidal ideation and suicide attempts through core ITS variables (i.e., burdensomeness, thwarted belongingness, and suicide capability).
An online sample of Mechanical Turk workers ( = 365) completed measures assessing substance use frequency, burdensomeness, thwarted belongingness, suicide capability, suicidal ideation, and suicide attempts.
After controlling for relevant clinical and demographic covariates, substance use frequency was indirectly related to suicidal ideation through burdensomeness but not thwarted belongingness. Substance use frequency was indirectly related to suicide attempts through suicide capability only.
The cross-sectional design precludes conclusions about the precise nature and direction of the relations examined. The use of a community sample limits generalizability to more severe substance using samples.
Results highlight the relevance of distinct ITS factors in the relation between substance use frequency and both suicidal ideation and suicide attempts. Results may inform specific targets for novel interventions aimed at reducing suicide risk among substance-using individuals.HighlightsSubstance use frequency was indirectly related to SI through burdensomeness.Substance use frequency was not indirectly related to SI through thwarted belongingness.Substance use frequency was indirectly related to SA only through suicide capability.
尽管物质使用与自杀意念和自杀未遂均有关联，但这些关联背后的因素仍不明确。自杀人际-心理理论（ITS）为理解物质使用如何增加自杀风险提供了一个框架。本研究的目的是检验物质使用频率是否通过ITS的核心变量（即负担感、归属感受挫和自杀能力）与自杀意念和自杀未遂存在间接关联。
通过亚马逊土耳其机器人平台招募了365名在线参与者，他们完成了评估物质使用频率、负担感、归属感受挫、自杀能力、自杀意念和自杀未遂的测量。
在控制了相关的临床和人口统计学协变量后，物质使用频率通过负担感与自杀意念存在间接关联，但与归属感受挫无关。物质使用频率仅通过自杀能力与自杀未遂存在间接关联。
横断面设计无法得出所考察关系的确切性质和方向的结论。使用社区样本限制了研究结果对更严重物质使用样本的推广性。
研究结果突出了ITS不同因素在物质使用频率与自杀意念和自杀未遂关系中的相关性。研究结果可为旨在降低物质使用个体自杀风险的新型干预措施提供具体目标。要点总结：物质使用频率通过负担感与自杀意念存在间接关联。物质使用频率通过归属感受挫与自杀意念不存在间接关联。物质使用频率仅通过自杀能力与自杀未遂存在间接关联。
