Brouwer et al.(2004) have conducted study to analyse the reliability of the test or retest of Dutch version of RMDQ in a sample size of 30 CLBP patients. The RMDQ of the Dutch language version displayed good reliability having an ICC (Interclass Correlation Coefficient) of 0.91( acceptable range of reliability has ICC greater than or equal to 0.75). This RMDQ of Dutch language version proves to be reliable in measuring the functional status in patients with CLBP. But the natural variation should be taken into consideration when this RMDQ is used clinically.
Brouwer et al.(2004) have conducted study to analyse the stability of the test or retest of Dutch version of RMDQ in a sample size of 30 patients suffering from CLBP (Chronic Low Back Pain). While calculating the agreement limits for quantifying the stability, a higher quantity of natural variation was found which is of ± 5.4 and this is relative to the range of total score which is in between 0-24.
Reference:
Brouwer,S Kuijer1,W , Dijkstra PU, Göeken LNH , GroothoffJW and Geertzen JHB(2004).Reliability and stability of the Roland Morris Disability Questionnaire: intra class correlation and limits of agreement, Disabil Rehabil.,February,Vol. 26, No. 3 , pp.162-5.
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