Translation and Evaluation of the Content Validity and Reliability of the Persian Version of the Modified-Restless Legs Syndrome Diagnostic Questionnaire

Behnoosh  Shahsavaripoor; Hojjat  Sayyadi; Yazdan  Heydari; Melika Arab  Bafrani; Amirhossein  Niknazar; Katayoun  Moradi; Mandana  Haghshenas

doi:10.18502/jimc.v9i1.20490

Behnoosh Shahsavaripoor Department of Psychiatry and Behavioral Health, College of Medicine, Ohio State University Wexner Medical Center, Columbus, OH, USA
Hojjat Sayyadi Non-communicable Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran
Yazdan Heydari Non-communicable Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran
Melika Arab Bafrani Tehran University of Medical Sciences, Tehran, Iran
Amirhossein Niknazar Iran University of Medical Sciences, Tehran, Iran
Katayoun Moradi Neuromusculoskeletal Research Center, Department of Physical Medicine and Rehabilitation, Iran University of Medical Science (IUMS), Tehran, Iran
Mandana Haghshenas Non-communicable Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran

DOI: https://doi.org/10.18502/jimc.v9i1.20490

Keywords: Prevalence, Reproducibility of results, Restless legs syndrome, Surveys and questionnaires

Abstract

Background: 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).

Methods: 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.

Results: 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.

Conclusion: In this study, the appropriate validity and reliability of the Persian version of m-RLS-DQ was confirmed.