自杀意念的维度及其临床意义。
The dimensionality of suicidal ideation and its clinical implications.
机构信息
Service of Liaison Psychiatry and Crisis Intervention, Geneva University Hospitals, Geneva, Switzerland.
出版信息
Int J Methods Psychiatr Res. 2019 Mar;28(1):e1755. doi: 10.1002/mpr.1755. Epub 2018 Nov 13.
Abstract
OBJECTIVES
No consensus has been reached regarding the theoretical dimensions underlying the Scale for Suicide Ideation (SSI) and Beck's Scale for Suicide Ideation (BSI), widely used in research and clinical practice. This undermines the understanding and management of suicidal behavior.
METHODS
The factor structure of the SSI and the BSI was investigated in 201 patients visiting the emergency department of the Geneva University Hospital, Switzerland, for suicidal ideation or a suicide attempt.
RESULTS
Exploratory factor analyses (EFAs) identified a unique theoretical dimension. Item removal based on analyses of communalities improved the explained part of variance in both scales. A joint factor analysis provided results very similar to those yielded by initial EFAs.
CONCLUSIONS
The single factor underlying the SSI and the BSI was composed of items encompassing a construct of suicide desire. Nonretained items corresponded to other elements of suicidal behavior (e.g., plans and preparations regarding the upcoming suicide attempt). These scales could not discriminate between suicide ideators and suicide attempters.
摘要
目的
在研究和临床实践中广泛使用的自杀意念量表（SSI）和贝克自杀意念量表（BSI）的理论维度尚未达成共识。这阻碍了对自杀行为的理解和管理。
方法
对瑞士日内瓦大学医院急诊科因自杀意念或自杀未遂就诊的 201 名患者进行了 SSI 和 BSI 的因子结构研究。
结果
探索性因子分析（EFA）确定了一个独特的理论维度。基于共通性分析的项目剔除提高了两个量表中可解释方差的比例。联合因子分析的结果与初始 EFA 非常相似。
结论
SSI 和 BSI 所依据的单一因子由包含自杀欲望结构的项目组成。未保留的项目对应于自杀行为的其他要素（例如，即将进行的自杀尝试的计划和准备）。这些量表不能区分自杀意念者和自杀未遂者。
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