ABSTRACT

This study aimed to validate the Greek version of the Dissociative Experience Scale (DES). A sample of 340 psychiatric outpatients and controls was selected. Part of the sample went through a retest procedure after a two-week period. Due to the absence of equivalent tests, the Multiscale Dissociation Inventory (MDI), the Structured Clinical Interview for DSM-IV-Dissociative Disorders Revised (SCID-D-R), and the Zung Self-Rating Anxiety Scale were used. Explanatory factor analysis was performed, resulting in a 28-item scale; the analysis revealed four factors, explaining 61% of total variation: Depersonalization, Amnesia, Absorption, and Miscellaneous. Cronbach’s alpha coefficient for the DES was 0.95. Intraclass correlation coefficient (ICC) of the total score between the first and second interview was 0.84. Concurrent and convergent validity, as assessed by correlations with clinical assessment used as a “gold standard,” (0.77), MDI (0.96), and Zung scale (0.75) were satisfactory to excellent. The total score on the DES was significantly higher in the clinical sample than in the controls (17.8 ± 16.2 vs. 5.8 ± 7.2, p < .001), indicating high discriminant validity. After the ROC analysis was run, the best compromise between sensitivity/specificity was achieved at the value of 20. The Greek version of the DES is a reliable and valid tool suitable to assess dissociation in clinical and healthy populations.

摘要

本研究旨在验证希腊版本的分离体验量表 (DES)。选择了 340 名精神病门诊患者和对照样本。部分样品在两周后经历了重新测试程序。由于缺乏等效测试，因此使用了多尺度分离量表 (MDI)、修订版 DSM-IV-分离性障碍的结构化临床访谈 (SCID-DR) 和 Zung 自评焦虑量表。进行了解释性因素分析，产生了 28 个项目的量表；分析揭示了四个因素，解释了总变异的 61%：人格解体、健忘症、吸收和杂项。DES 的 Cronbach α 系数为 0.95。第一次和第二次面试之间总分的组内相关系数（ICC）为0.84。同时效度和收敛效度，根据与用作“黄金标准”的临床评估的相关性进行评估，(0.77)、MDI (0.96) 和 Zung 量表 (0.75) 令人满意至优秀。临床样本中 DES 的总分明显高于对照组（17.8 ± 16.2 vs. 5.8 ± 7.2，p < .001)，表明区分效度高。运行 ROC 分析后，灵敏度/特异性之间的最佳折衷值达到 20。DES 的希腊版本是一种可靠且有效的工具，适用于评估临床和健康人群中的分离。