1. Discriminative Validity of the Dimensional Obsessive–Compulsive Scale for Separating Obsessive–Compulsive Disorder From Anxiety Disorders
- Author
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Eric A. Youngstrom, Mian Li Ong, Lillian Reuman, and Jonathan S. Abramowitz
- Subjects
Adult ,Male ,Obsessive-Compulsive Disorder ,050103 clinical psychology ,050109 social psychology ,Logistic regression ,Odds ,Discriminative model ,Obsessive compulsive ,Surveys and Questionnaires ,mental disorders ,medicine ,Humans ,Obsessive compulsive scale ,0501 psychology and cognitive sciences ,Applied Psychology ,Receiver operating characteristic ,05 social sciences ,Anxiety Disorders ,Diagnostic and Statistical Manual of Mental Disorders ,Clinical Psychology ,Anxiety ,Self Report ,medicine.symptom ,Psychology ,Incremental validity ,Clinical psychology - Abstract
Objective: We investigated the diagnostic efficiency and clinical utility of the Dimensional Obsessive–Compulsive Scale (DOCS) and subscales for distinguishing obsessive–compulsive disorder (OCD) from anxiety disorders (ADs). Method: A total of 369 participants (167 male, Mage = 29.61 years) diagnosed with DSM-IV OCD or AD, recruited from specialty clinics across the United States, completed clinical interviews and self-report questionnaires, including the DOCS. Receiver operating characteristic analyses and diagnostic likelihood ratios (DiLRs) determined discriminative validity and provided clinical utility. Logistic regressions tested for incremental validity in the DOCS-total scale and subscales in predicting OCD status. Results: The DOCS-total scale and Contamination subscale performed best in differentiating between OCD and AD diagnosis (DOCS-total: Area under curve [AUC] = .75, p < .001; Contamination: AUC = .70, p < .001) as compared with the other subscales. At high scores (DOCS-total: 28+, Contamination: 6+), Contamination was more effective than the DOCS-total in differentiating OCD from ADs, with high scores in Contamination quadrupling OCD odds and DOCS-total by about threefold (Contamination DiLR+ = 4.04, DOCS-total DiLR+ = 2.82). At low scores (DOCS-total: 0-9, Contamination: 0-2), the converse was true, with low scores in Contamination cutting OCD odds by half and DOCS-total by one fifths (Contamination DiLR− = 0.52, DOCS-total DiLR− = 0.23). Conclusion: At high scores, the Contamination subscale is the most helpful subscale to differentiate OCD and ADs. For low scores, the DOCS-total scale performs the best among the scales.
- Published
- 2018
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