The Reliability and Validity Study of the Turkish Version of Yale-Brown Obsessive-compulsive Scale Modified for Body Dysmorphic Disorder for Adolescents

Abstract

Objective: Body dysmorphic disorder (BDD) is defined as a highly disturbing condition characterized by the patient developing an excessive anxiety and repetitive behaviors. The prevalence of BDD in the orthodontic patients is still not well known. The aim of this study was to evaluate reliability and validity study of the Turkish version of the Yale-Brown Obsessive-Compulsive Scale modified for Body Dysmorphic Disorder (TR-YBOCS-BDD) for adolescents. Methods: This study consisted of two groups, the study group and the control group. The study group consisted of 126 patients who were admitted with aesthetic complaints (n=126). The control group consisted of 126 participants who were admitted with non-aesthetic complaints such as dental calculus, caries and pain. Turkish versions of YBOCS-BDD and Body Image Disturbance Questionnaire (T-BIDQ) were administered to 252 patients in total for reliability and validity studies. Results: The internal consistency coefficient of the TR-YBOCSBDD scale was 0.903. The scores of the subareas of the TRYBOCS- BDD scale were analyzed with Principal Components Factor Analysis and it was concluded that 8 factors corresponded to 62.104% of the total variance. The test re-test analysis was carried out by applying the TR-YBOCS-BDD scale to 126 participants and same test re-test was made at one-week interval. High positive correlation was found between the first total scale results and the total score calculated one week later (rho =0.986, p<0.001). Conclusion: The Turkish translation of the BDD-YBOCS has content and construct validity and is also reliable method. The clinicians can apply this test to adolescents in the Turkish-speaking countries.

Keywords

• adolescent psychiatry
• body dysmorphic disorder
• orthodontics