Reliability and validity of Japanese version of Roland Morris Disability Questionnaire(RM-24)

According to research study by Fujiwara et al.(2003),a comparative study was taken up between JOA (Japanese Orthopaedic Association score) which was widely used in Japan but untested in terms of validity and reliability and that of the scores of untranslated but widely used RMDQ and ODI . As per results, reliability is estimated by the consistency calculated internally. It has reached 0.83 which is the Cronbach alpha for ODI and for the RMDQ there is 0.86. The result of the calculated value of test-retest was equal to a value of 0.93 (P<0.01; n=20) for that of ODI and for RMDQ, it was 0.95 (P<0.01; n=20). For the JOA score the correlation of ODI was -0.647(P<0.01) and with RMDQ it was -0.568( P<0.01). There was considerable correlation between RMDQ and ODI (r=0.785; P<0.01). The correlation in between 3 measures which are disease-specific like ODI , JOA score and RMDQ is significant apart from various subscales of SF-36 (P<0.01). Significant correlation existed between RMDQ and ODI (r=0.785 and P<0.01). The correlation between all SF-36 subscales (P<0.01) and ODI, JOA score and RMDQ which are the three measures that are specific is significant The reliability of test-retest is (r = 0.91, P < 0.01).

The Japanese versions of RMDQ and ODI were valid and reliable. In Japan recommendations can be made of these instruments for clinical trials in future. It was also shown by results that there are acceptable properties of construct validity and reliability as shown by JOA score which suggests that the score is valid and reliable. More studies are required to verify the responsiveness and validity of JOA score.

                                                    

Reference

 Fujiwara A, Kobayashi N, Saiki K, Kitagawa T, Tamai K, Saotome K.(2003).Association of the Japanese Orthopaedic Association score with the Oswestry Disability Index, Roland-Morris Disability Questionnaire, and short-form 36.Spine (Phila Pa 1976). Jul 15;Vol.28, No.14, pp.1601-7.

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