van Ballegooijen Wouter, Littlewood Donna L, Nielsen Emma, Kapur Nav, Gooding Patricia
Department of Psychiatry and Department of Clinical, Neuro and Developmental Psychology, Vrije Universiteit; and Amsterdam Public Health, Mental Health Program, Amsterdam, The Netherlands.
NIHR Greater Manchester Patient Safety Translational Research Centre, School of Health Sciences, and Manchester Academic Health Science Centre, University of Manchester, UK.
BJPsych Open. 2022 Jun 3;8(4):e105. doi: 10.1192/bjo.2022.68.
Psychological models of suicidal experiences are largely based on cross-sectional or long-term prospective data with follow-up intervals typically greater than 1 year. Recent time-series analyses suggest that these models may not account for fluctuations in suicidal thinking that occur within a period of hours and/or days.
We explored whether previously posited causal relationships between defeat, entrapment and suicidal ideation accounted for temporal associations between these experiences at small time intervals from 3 to 12 h.
Participants ( = 51) completed an ecological momentary assessment (EMA) study, comprising repeated assessments at semi-random time points up to six times per day for 1 week, resulting in 1852 completed questionnaires. Multilevel vector autoregression was used to calculate temporal associations between variables at different time intervals (i.e. 3 to 12 h between measurements).
The results showed that entrapment severity was temporally associated with current and later suicidal ideation, consistently over these time intervals. Furthermore, entrapment had two-way temporal associations with defeat and suicidal ideation at time intervals of approximately 3 h. The residual and contemporaneous network revealed significant associations between all variables, of which the association between entrapment and defeat was the strongest.
Although entrapment is key in the pathways leading to suicidal ideation over time periods of months, our results suggest that entrapment may also account for the emergence of suicidal thoughts across time periods spanning a few hours.
自杀经历的心理学模型很大程度上基于横断面或长期前瞻性数据，随访间隔通常大于1年。最近的时间序列分析表明，这些模型可能无法解释在数小时和/或数天内发生的自杀念头波动。
我们探讨了先前假定的挫败、被困与自杀意念之间的因果关系，是否能解释这些经历在3至12小时的小时间间隔内的时间关联。
51名参与者完成了一项生态瞬时评估（EMA）研究，包括在半随机时间点进行重复评估，每天最多6次，持续1周，共获得1852份完整问卷。使用多水平向量自回归来计算不同时间间隔（即测量之间3至12小时）变量之间的时间关联。
结果显示，在这些时间间隔内，被困严重程度在时间上与当前及随后的自杀意念始终相关。此外，被困在约3小时的时间间隔内与挫败和自杀意念存在双向时间关联。残差和同期网络显示所有变量之间存在显著关联，其中被困与挫败之间的关联最强。
虽然被困在数月时间跨度内导致自杀意念的途径中起关键作用，但我们的结果表明，被困也可能解释了在数小时时间跨度内自杀念头的出现。
