Background and Objective: Cervical myelopathy population (CMP) is a common cause of significant clinical morbidity. This study aimed to translate and validate the modified Japanese Orthopedic Association score (mJOA) English version in Iran.
Material and Methods: This was a prospective clinical validation study. Psychometric properties of the questionnaire were assessed using internal consistency; inter-observer reliability, discriminant validity, and responsive ness of the questionnaire to change.
Results: A total of 63 patients were studied. The mean mJOA score was 9.82 (SD = 1.0). Internal consistency of the mJOA as measured by Cronbach’s alpha coefficient was satisfactory (alpha = 0.77). Inter-observer agreement as measured by Kappa statistics also was found to be acceptable (0.75). Known-groups comparison was performed to test discriminant validity and the findings indicated that the mJOA was able to differentiate between males and females and different age groups as expected (P < 0.0001). Finally the questionnaire was found to be responsive to change as patients’ pre- and post-operative scores on the mJOA (P < 0.0001).Conclusion: The Iranian version of mJOA performed well and the findings suggest that it is a reliable and valid measure of motor, sensory and sphincter dysfunctions among CMP patients.
Copyright. In accordance with Bethesda Statement on Open Access Publishing (released June 20, 2003, available from: http://www.earlham.edu/~peters/fos/bethesda.htm), all works published in JIVR are open access and are immediately available to anyone on the website of the journal without cost. JIVR is an open-access journal distributed under the terms of the Creative Commons Attribution 3.0 License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.