Development and Validation of the Overall Depression Severity and Impairment Scale
Development and Validation of the Overall Depression Severity and Impairment Scale
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DOI：
10.1037/a0036216
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发表时间：
2014-09-01
影响因子：
3.6
通讯作者：
Barlow, David H.
中科院分区：
文献类型：
--
作者：
Bentley, Kate H.;Gallagher, Matthew W.;Barlow, David H.
需要捕捉抑郁症的严重程度和损害是普遍的。现有的抑郁量表很长，主要集中在个别症状，而不是造成的损害。总体抑郁严重程度和损害量表（ODSIS）是一项5项连续测量，旨在用于异质性心境障碍和阈下抑郁症状。本研究探讨了在门诊患者的情绪障碍（N = 100），本科生（N = 566），和社区为基础的成年人（N = 189）的心理测量特性的ODSIS。内部一致性，潜在结构，项目反应理论，分类准确性，收敛和区分效度，和差异项目功能分析。ODSIS评分表现出良好的内部一致性，验证性因素分析支持一维结构。项目反应理论的结果表明，ODSIS提供了更多的信息，高水平的抑郁比那些低水平的抑郁个体。在ODSIS上的反应在有和没有心境障碍的个体之间以及在临床和亚临床水平上与抑郁相关的严重程度之间有很好的区分。8分的切割得分正确分类82%的门诊患者有或没有情绪障碍，它证明了一个有利的平衡的敏感性和特异性和阳性和阴性预测值。的ODSIS表现出良好的收敛性和判别效度，结果表明，项目功能相似的临床和非临床样本。总体而言，研究结果表明，ODSIS是一个有效的工具，用于测量抑郁症相关的严重程度和损害。ODSIS的简洁和易用性支持其在各种环境中筛查和监测治疗反应的实用性。
The need to capture severity and impairment of depressive symptomatology is widespread. Existing depression scales are lengthy and largely focus on individual symptoms rather than resulting impairment. The Overall Depression Severity and Impairment Scale (ODSIS) is a 5-item, continuous measure designed for use across heterogeneous mood disorders and with subthreshold depressive symptoms. This study examined the psychometric properties of the ODSIS in outpatients in a clinic for emotional disorders (N = 100), undergraduate students (N = 566), and community-based adults (N = 189). Internal consistency, latent structure, item response theory, classification accuracy, convergent and discriminant validity, and differential item functioning analyses were conducted. ODSIS scores exhibited excellent internal consistency, and confirmatory factor analyses supported a unidimensional structure. Item response theory results demonstrated that the ODSIS provides more information about individuals with high levels of depression than those with low levels of depression. Responses on the ODSIS discriminated well between individuals with and without a mood disorder and depression-related severity across clinical and subclinical levels. A cut score of 8 correctly classified 82% of outpatients as with or without a mood disorder; it evidenced a favorable balance of sensitivity and specificity and of positive and negative predictive values. The ODSIS demonstrated good convergent and discriminant validity, and results indicate that items function similarly across clinical and nonclinical samples. Overall, findings suggest that the ODSIS is a valid tool for measuring depression-related severity and impairment. The brevity and ease of use of the ODSIS support its utility for screening and monitoring treatment response across a variety of settings.