Beth Israel Medical Center, New York, New York, USA.
BMC Psychiatry. 2010 Dec 14;10:110. doi: 10.1186/1471-244X-10-110.
This study aims to develop the construct of a 'suicide trigger state' by exploring data gathered with a novel psychometric self-report instrument, the STS-2.
The STS-2, was administered to 141 adult psychiatric patients with suicidal ideation. Multiple statistical methods were used to explore construct validity and structure.
Cronbach's alpha (0.949) demonstrated excellent internal consistency. Factor analyses yielded two-component solutions with good agreement. The first component described near-psychotic somatization and ruminative flooding, while the second described frantic hopelessness. ROC analysis determined an optimal cut score for a history of suicide attempt, with significance of p < 0.03. Logistic regression analysis found items sensitive to history of suicide attempt described ruminative flooding, doom, hopelessness, entrapment and dread.
The STS-2 appears to measure a distinct and novel clinical entity, which we speculatively term the 'suicide trigger state.' High scores on the STS-2 associate with reported history of past suicide attempt.
本研究旨在通过探索一种新型心理测量自评工具 STS-2 收集的数据，构建“自杀触发状态”的结构。
对 141 名有自杀意念的成年精神科患者进行 STS-2 测试。采用多种统计方法探索结构效度和结构。
克朗巴赫α系数（0.949）显示出极好的内部一致性。因子分析得出了两种具有良好一致性的成分解决方案。第一个成分描述了近乎精神病的躯体化和反复思考的泛滥，而第二个成分描述了绝望的疯狂。ROC 分析确定了自杀未遂史的最佳截断分数，p 值<0.03。逻辑回归分析发现，对自杀未遂史敏感的项目描述了反复思考、厄运、绝望、困境和恐惧。
STS-2 似乎测量了一种独特而新颖的临床实体，我们推测称之为“自杀触发状态”。STS-2 的高分与报告的过去自杀未遂史有关。
