Iran Medical Council Journal of Iranian Medical Council 2645-338X 9 1 2026 01 01 Translation and Evaluation of the Content Validity and Reliability of the Persian Version of the Modified-Restless Legs Syndrome Diagnostic Questionnaire 166 171 236561 10.18502/jimc.v9i1.20490 EN Behnoosh Shahsavaripoor Department of Psychiatry and Behavioral Health, College of Medicine, Ohio State University Wexner Medical Center, Columbus, OH, USA 0000-0002-3352-3911 Hojjat Sayyadi Non-communicable Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran 0000-0002-8348-3604 Yazdan Heydari Non-communicable Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran 0000-0003-1948-2997 Melika Arab Bafrani Tehran University of Medical Sciences, Tehran, Iran 0000-0002-3983-5844 Amirhossein Niknazar Iran University of Medical Sciences, Tehran, Iran 0009-0006-0172-9997 Katayoun Moradi Neuromusculoskeletal Research Center, Department of Physical Medicine and Rehabilitation, Iran University of Medical Science (IUMS), Tehran, Iran 0000-0001-8787-3776 Mandana Haghshenas Non-communicable Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran Journal Article 2024 12 02 <strong>Background: </strong>Restless Legs Syndrome (RLS) is a common disease with an estimated overall prevalence of 3% based on findings from a recent meta-analysis. Due to the lack of a reliable Persian questionnaire for the diagnosis of RLS, this study aimed to translate and evaluate the content validity and reliability of the Persian version of the modified-Restless Legs Syndrome Diagnostic Questionnaire (m-RLS-DQ).<br><strong>Methods: </strong>The m-RLS-DQ, a reliable and accurate tool for diagnosing RLS was selected. Three bilingual physicians translated it into Persian, then unified by the fourth expert. Eight specialists evaluated the content validity using a Likert scale for relevance. Reliability was tested by administering the final version to 10 RLS the patients. <br><strong>Results:</strong> The reliability index (i.e., Cronbach’s alpha coefficient) was also obtained as 0.78. The content validity was determined with the help of Microsoft Excel software, showing a Content Validity Index (CVI) of 0.98.<br><strong>Conclusion: </strong>In this study, the appropriate validity and reliability of the Persian version of m-RLS-DQ was confirmed.<br><br> https://www.jimc.ir/article_236561_d1281c210b28e268966dbf3da53d5524.pdf