Psychometric Evaluation of the Revised Suicide Crisis Inventory (SCI-2) in Germany: Factor Structure, Reliability, and Validity in an Online and Outpatient Sample

IF 3.2 3区 心理学 Q1 PSYCHOLOGY, CLINICAL
Laura Melzer, Carola Claus, Nelia Posen, Thomas Forkmann, Megan L. Rogers, Tobias Teismann
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Abstract

Background

The suicide crisis syndrome (SCS) is considered a cognitive and affective state preceding a suicide attempt. Previous studies have demonstrated its predictive validity and have shown it to be a uniform disorder entity in various countries worldwide; however, research in Europe remains limited. The aim of this study was therefore to contribute to a cross-cultural perspective on the SCS and to examine its factor structure, reliability, and validity in Germany.

Methods

Data of N = 1157 participants were collected between October 2022 and December 2024 cross-sectionally from a German adult outpatient sample (n = 586; 65% female; age: M[SD] = 36.31[12.80], range: 18–68) and a German adult online sample (n = 571; 74% female; age: M[SD] = 24.69[7.20], range: 18–67). Participants completed the German version of the revised 61-item Suicide Crisis Inventory (SCI-2-G) and other instruments (e.g., SIBS, BDI-II, and DASS) to measure convergent and concurrent criterion validity. Statistical analyses included confirmatory factor analyses (CFAs) to confirm the proposed factors (entrapment, affective disturbance, loss of cognitive control, hyperarousal, and social withdrawal).

Results

The SCI-2-G total score demonstrated excellent internal consistency, good convergent, and moderate concurrent criterion validity in relation to stress, depression, anxiety, suicidal ideation, and lifetime suicide attempts. The CFA showed good model fit for the online sample and adequate-to-good fit for the outpatient sample, with the five-factor model consistently outperforming the one-factor model.

Conclusion

CFA yielded adequate-to-good model fit depending on the sample. Analyses indicate that the SCI-2 is a valid measurement tool in Germany. The five-factor solution is suggested to have higher clinical utility than a one-factor solution, as it reflects the current formulation of the proposed SCS diagnosis. Future studies should expand the cross-cultural perspective with longitudinal studies across diverse clinical and nonclinical samples.

Summary

  • First validation of the German revised version Suicide Crisis Inventory (SCI-2-G).
  • Confirmatory factor analyses support the five-factor solution of the scale.
  • Good scale properties for an online and outpatient sample in Germany.
德国修订自杀危机量表(SCI-2)的心理测量评估:在线和门诊样本的因素结构、信度和效度
背景自杀危机综合征(SCS)被认为是自杀企图前的一种认知和情感状态。先前的研究已经证明了其预测有效性,并表明它在世界各国是一种统一的疾病实体;然而,在欧洲的研究仍然有限。因此,本研究的目的是从跨文化的角度来研究SCS,并检验其在德国的因素结构、信度和效度。方法在2022年10月至2024年12月期间从德国成人门诊样本中横断面收集N = 1157名参与者的数据(N = 586;65%的女性;年龄:M[SD] = 36.31[12.80],范围:18-68)和德国成人在线样本(n = 571;74%的女性;年龄:M[SD] = 24.69[7.20],范围:18-67)。参与者完成了德文版本的61项自杀危机量表(SCI-2-G)和其他工具(如SIBS、BDI-II和DASS)来测量收敛效度和并发效度。统计分析包括验证性因素分析(CFAs),以确认提出的因素(诱捕、情感障碍、认知控制丧失、过度觉醒和社交退缩)。结果SCI-2-G总分在压力、抑郁、焦虑、自杀意念和终身自杀企图方面表现出良好的内部一致性、良好的收敛性和中等的并发效度。CFA显示在线样本的模型拟合良好,门诊样本的模型拟合足够好,五因素模型始终优于单因素模型。结论根据样本的不同,CFA的模型拟合是足够好的。分析表明,SCI-2在德国是一种有效的测量工具。五因素解决方案被认为比单因素解决方案具有更高的临床效用,因为它反映了建议的SCS诊断的当前配方。未来的研究应扩大跨文化视角,对不同临床和非临床样本进行纵向研究。德国修订自杀危机量表(SCI-2-G)首次验证。验证性因子分析支持量表的五因子解。良好的规模性质在线和门诊样本在德国。
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来源期刊
Clinical psychology & psychotherapy
Clinical psychology & psychotherapy PSYCHOLOGY, CLINICAL-
CiteScore
6.30
自引率
5.60%
发文量
106
期刊介绍: Clinical Psychology & Psychotherapy aims to keep clinical psychologists and psychotherapists up to date with new developments in their fields. The Journal will provide an integrative impetus both between theory and practice and between different orientations within clinical psychology and psychotherapy. Clinical Psychology & Psychotherapy will be a forum in which practitioners can present their wealth of expertise and innovations in order to make these available to a wider audience. Equally, the Journal will contain reports from researchers who want to address a larger clinical audience with clinically relevant issues and clinically valid research.
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