Validity and Reliability of the Turkish Version of Generalized Anxiety Disorder Scale-Revised
Engin, Betül Hacer
Yaşar, Alişan Burak
Usta Gündür, Elvan Başak
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CitationGündüz, A., Gündoğmuş, İ., Sertçelik, S., Engin, B. H., İşler, A., Yaşar, A. B., Gönül, H., Çipil, A., & Gündüz, E. (2021). Validity and Reliability of the Turkish Version of Generalized Anxiety Disorder Scale-Revised. Psychiatry investigation, 18(10), 949–957. DOI: https://doi.org/10.30773/pi.2021.0174
Abstract Objective: This study aims to assess the psychometric values of the Generalized Anxiety Disorder Scale-Revised (GADS-R) which measures the intensity and duration of worry, various coping and avoidance strategies to cope with worrying, and positive and negative metacognitive beliefs about worrying. Methods: 114 patients with generalized anxiety disorder and 198 healthy controls were included in the study. These patients were diagnosed according to DSM-IV TR, and the primary diagnosis of the patients was generalized anxiety disorder which was confirmed via SCID I and II, subsequently. Sociodemographic form, GADS-R total and subscale scores, and Meta-Cognitions Questionnaire-30 (MCQ-30), Beck Depression Inventory (BDI), Beck Anxiety Inventory (BAI), Generalized Anxiety Disorder-7 Scale (GAD-7), and Penn State Worry Questionnaire (PSWQ) were used to assess validity, reliability and cut-off point. Results: GADS-R total and subscale scores and MCQ-30, BDI, BAI, GAD-7, and PSWQ were found to be statistically higher in the patients with GAD compared to a healthy control group. GADS-R has five factors and showed relatively acceptable sensitivity and specificity for detecting anxiety disorders at a cut-off point of 1188. Conclusion: The GADS-R is a valid and reliable scale that can be used in the Turkish population as an assessment tool.