A comparison of symptom dimensions for obsessive compulsive disorder and obsessive compulsive-related disorders.

OBJECTIVE: In this study, it is aimed to determine obsessive compulsive-related disorders (OCRDs) comorbidity among the patients with obsessive compulsive disorder (OCD) and compare patients with OCD with or without comorbid OCRDs in terms of the severity of their OCD symptoms, symptom dimensions, and comorbidity with other axis I disorders. METHODS: The study included 90 patients diagnosed as having OCD according to the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR). The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) diagnostic criteria for OCRDs were used to determine the presence of OCRDs. In order to determine the symptom dimensions and severity of these individuals' OCD symptoms, we administered the Dimensional Obsessive Compulsive Scale (DOCS) and The Yale-Brown Obsessive Compulsive Scale (Y-BOCS). RESULTS: In our study, 20% of the patients with OCD simultaneously met the criteria for at least one OCRD, we also found that a significantly greater proportion of this group were men. None of the mentioned disorders was associated with any symptom dimensions we evaluated using DOCS. In addition, no differences were found in the severity of OCD symptoms and comorbid axis I disorders between the group with comorbid OCRDs and the group without comorbid OCRDs. DISCUSSION: There was no significant relationship between the symptom dimensions of OCD and OCRDs. It is found that OCRD comorbidity does not increase the severity of OCD symptoms and the prevalence of an axis I diagnosis.

[Dimensional Approach to Obsessive-Compulsive Disorder: Dimensional Obsessive-Compulsive Scale with Turkish Psychometric Properties]. / Obsesif Kompülsif Bozuklukta Boyutsal Yaklasim: Boyutsal Obsesif Kompülsif Bozukluk Ölçegi Türkçe’nin Psikometrik Özellikleri.

OBJECTIVE: The Dimensional Obsessive Compulsive Scale (DOCS) is a measurement tool that examines the severity of thematically distinct symptom domains of obsessive compulsive disorder (OCD). In this study we assess psychometric properties of the Turkish version of DOCS. METHODS: Ninety-six patients who presented consecutively to the Diskapi Yildirim Beyazit Teaching and Research Hospital outpatient unit and who were diagnosed with OCD according to the DSM-IV-TR criteria were enrolled in the study. The DOCS, Yale-Brown Obsessive Compulsive Scale (YBOCS), and Padua Inventory (PI) were completed by the participants. Internal consistency was estimated using Cronbach’s Alpha values and item-total correlations. Principal component analyses with Varimax rotation were used to assess latent factor structure . RESULTS: Explanatory Factor Analyses (EFA) revealed a 4-factor solution for the DOCS. Chronbach’s alpha values for the whole scale, “contamination” sub-scale, “responsibility” sub-scale, “unacceptable thoughts”, and “symmetry” sub-scales were 0.874, 0.932, 0.933, 0.948, 0.921, respectively. There was a high correlation between both total scores and sub-scales scores of DOCS, YBOCS and PI. CONCLUSIONS: Internal consistencies were good for the total scale and excellent for the sub-scales. The factor structure and the contents of the factors were perfectly in line with the original scale (i.e. 4 factor). Positive correlations between DOCS, its sub-scales, and similar OCD scales suggest that the DOCS accurately measures the structures it claims to assess. Thus the DOCS Turkish version can measure dimensional obsessive compulsive symptoms among the Turkish speaking OCD population.