Reliability, validity, consistency and sensitivity of Tunisian version of the Roland-Morris Disability Questionnaire (RM-24) for LBP patients

When Tunisian version of the Roland-Morris questionnaire or RMDQ is studied by Bejia,I. et al.(2005) on a sample size of 62 patients suffering from LBP. Bland Altman plot that was constructed for assessing the reliability of the test or re-test of 1 week displayed good reliability. In this case it was concluded that Roland-Morris questionnaire in Tunisian version has good reliability.

 

Bejia,I. et al.(2005) have made a study to make a validation of the Tunisian version of the RMQD or Roland–Morris Disability Questionnaire. The sample size of patients was 62 as taken for assessment of the questionnaire. All of the patients are suffering from low back pain. The alpha test designed by Cronback to make an assessment of the validity of the internal construct. Assessment of the validity of external construct was done by the association with the pain, the General Function Score and the Schober test. There was very good RMDQ internal consistency and the alpha test of Cronbach was at 0.94 which indicates a good validity of internal construct. There is correlation of the questionnaire with the score of visual analogue scale of pain (r=33; p=0.0001) apart from the scores of general Function( r=56; p=0.0001) and Schober test (r=0.27 ; p=0.0001). This correlation indicates sufficient validity of external construct. There is good construct validity both internally and externally.

 

For a study of sensitivity of the Tunisian version of the Roland-Morris questionnaire by Bejia,I. et al.(2005), a sample size of 62 patients was taken for assessment, all of whom are suffering from low back pain. In this study, a t-test was done for paired data to have a comparison of RMDQ scores. Using this t-test, the sensitivity to the change was found out. When RMDQ is administered after the sequence of therapy, it shows sensitivity with change (r= 0.83;p=0.000). Satisfactory result was obtained after comparing the score of the questionnaire to the score of the General function after completing the sequence of therapy (r=0.75; p=0.000). The tests prove that the tool has higher sensitivity to change. It is a useful and sufficient tool for assessing disability due to low back-pain.

 In the study of Tunisian version of RMQD  by Bejia,I. et al.(2005)on a sample size of 62 patients suffering from LBP, ,there was very good RMDQ internal consistency internally.

Reference

Bejia,I. et al.(2005), ‘Validation of the Tunisian version of the Roland-Morris questionnaire’. Eur Spine J., March, vol.14,no.2,pp.171-4

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