Using item response theory to understand comorbidity among anxiety and unipolar mood disorders.
Using item response theory to understand comorbidity among anxiety and unipolar mood disorders.
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DOI：
10.1037/1040-3590.13.1.140
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发表时间：
2001
影响因子：
3.6
通讯作者：
Robert F. Krueger;Michael S. Finger
中科院分区：
文献类型：
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作者：
Robert F. Krueger;Michael S. Finger
作者假设，焦虑和单相情绪障碍通常是并存的，因为每种障碍都表明了一个广泛的、更高的顺序因素。在具有全国代表性的国家共病调查参与者(N=251)的临床子样本中，单因素模型符合7种二分性焦虑和单相情绪诊断之间的相关性。根据文献提供的关于儿童情绪和行为问题结构的线索，我们将这一因素标记为内在化。项目反应理论被用来探索每个诊断是如何映射到内化因素的。从7个诊断得出的测试信息函数表明，它们主要测量因子的较高端。此外，在内化(符合6-7障碍标准)方面得分很高与社会成本增加有关，这一现象没有被“共病”概念很好地捕捉到。这些结果强调了开发全面内化因素的临床评估工具的必要性，并以分级、连续的方式测量焦虑和单相情绪障碍的共同和独特特征。
The authors hypothesized that anxiety and unipolar mood disorders are often comorbid because each disorder indicates a broad, higher order factor. In a clinical subsample of the nationally representative National Comorbidity Survey participants (N = 251), a one-factor model fit the correlations among 7 dichotomous anxiety and unipolar mood diagnoses. Following the lead provided by literature on the structure of emotional and behavioral problems in children, we labeled this factor internalizing. Item response theory was used to explore how each diagnosis mapped onto the internalizing factor. The test information function derived from the 7 diagnoses suggested that they measure primarily the higher end of the factor. In addition, very high scores on internalizing (meeting criteria for 6-7 disorders) were associated with increased social costs, a phenomenon not well captured by the "comorbidity" concept. The results underscore the need to develop clinical assessment instruments that span the full range of the internalizing factor and measure both the shared and distinctive features of anxiety and unipolar mood disorders in a graded, continuous fashion.