title: Cross-cultural adaptation and validation of the Korean version of the Roland-Morris Disability Questionnaire for use in low back pain.
abstract: OBJECTIVE
  The Roland-Morris Disability Questionnaire (RMDQ) is a reliable tool for evaluating disability in patients with back pain, but no Korean version has been published and validated. We developed a cross-culturally adapted Korean version of the RMDQ (RMDQ-K) and validated its use for assessing disability in Korean patients with low back pain.
  
  
  METHODS
  Two hundred thirty-one patients with low back pain were assessed using the RMDQ-K, visual analog scale (VAS) during rest and activity, and the Oswestry Disability Index (ODI). The results of 40 patients were used to evaluate the test-retest reliability. The correlations of the RMDQ-K with the VAS and ODI were used to assess validity.
  
  
  RESULTS
  The reliability of the RMDQ-K estimated using the internal consistency reached a Cronbach's alpha of 0.893. Test-retest trials showed a high intraclass correlation coefficient of 0.837 (95% CI 0.833-0.953). The RMDQ-K was significantly correlated with the ODI (r=0.738) and VAS during rest (r=0.450) and activity (r=0.412).
  
  
  CONCLUSIONS
  This study demonstrates that the RMDQ-K is a reliable, valid instrument for measuring of disability in Korean patients with low back pain.
authors.affiliation: Department of Rehabilitation Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.
authors.forename: Kyoung-Eun
authors.initials: KE
authors.lastname: Kim
authors.forename: Jae-Young
authors.initials: JY
authors.lastname: Lim
mesh_terms: D000328:Adult; D000368:Aged; D003431:Cross-Cultural Comparison; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D007723:Korea; D007802:Language; D017116:Low Back Pain / Q000175:diagnosis* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires