Investigation of the validity and reliability of the Mongolian version of the Roland-Morris disability questionnaire

Abstract

Background: The Roland-Morris Disability Questionnaire (RMDQ) is an internationally recognized assessment tool that can assess disability caused by back pain in adults, is an easy-to-use 24-question questionnaire related to activities of daily living, and documents the results and plans of physical therapy. The validity and reliability of the Mongolian version of this assessment method has not been studied in the Mongolian field of physical therapy. The lack of Mongolian versions of assessments specifically aimed at evaluating disability from low back pain provided the rationale for conducting this study. Aim: The goal is to evaluate the validity and reliability of the Mongolian version of Roland-Morris disability questionnaire. Materials and Methods: The validity of the RMDQ-M version was assessed by the expert committee and the reliability was assessed by Cronbach’s alpha using R 4.4.3. Results: When evaluating the validity of the RMDQ-M version among physical therapists, 97.5% (n=39) of the words were all understandable, and 2.5% (n=1) of the words were unclear. The reliability of the RMDQ-M version, measured by Cronbach’s Alpha, ranges from 0.903 to 0.939. Conclusion: The RMDQ-M version is considered a valid and reliable tool for assessing low back pain–related disability among patients receiving physical therapy.