Validation of the Korean version of the Roland–Morris Disability Questionnaire

Abstract

We evaluated the reliability and validity of an adapted Korean version of the Roland-Morris Disability Questionnaire (RMDQ). Translation/retranslation of the English version of RMDQ was conducted, and all steps of the cross-cultural adaptation process were performed. The Korean version of the Visual Analog Scale (VAS) measure of pain, RMDQ, and the previously validated Oswestry Disability Index (ODI) were mailed to 100 consecutive patients with chronic lower back pain (LBP) of at least 3 months. Eighty-one patients responded to the first mailing of questionnaires and 63 of the first-time responder returned their second survey. The average age of the 63 patients (45 female, 18 male) was 47.8 years. Reliability assessment was determined by estimating kappa statistics of agreement for each item, the intraclass correlation coefficient (ICC), and Cronbach's a. Concurrent validity was evaluated by comparing the responses of RMDQ with the results of VAS and responses of ODI by using Pearson's correlation coefficient. The constructed Bland-Altman plot showed a good reliability.All items had a kappa statistics of agreement greater than 0.6. The RMDQ showed excellent test/re-test reliability as evidenced by the high ICC for 2 test occasions (ICC = 0.932, P \ 0.001). Internal consistency was found to be very good at both assessments with Cronbach's a (0.942 and 0.951 at first and second assessments, respectively). The RMDQ was correlated with the VAS (r = 0.692; P = 0.000 and r = 0.668; P = 0.000 at first and second assessments, respectively), and with the ODI (r = 0.789; P = 0.000 and r = 0.802; P = 0.000, respectively). The adapted Korean version of the RMDQ was successfully translated and showed acceptable measurement properties, and as such, is considered suitable for outcome assessments in the Korean speaking patients with LBP.

Validation of the Hungarian version of the Roland–Morris disability questionnaire

“…The Hungarian RMQ showed excellent correlation with the ODI. The result is in accordance with the correlation of ODI with the earlier published Argentinean (0.81) [29], German (0.80) [30], Japanese (0.78) [31], Korean (0.78, 0.80) [32] and Chinese (0.79) [ The literary recommendation [26] in this case, would be at least 0.70, but the ICC value in the present study turned out to be far more favorable. The ICC results of some other national versions are a bit lower: German (0.82) [30], Norwegian (0.89) [35], Persian (0.86) [36], Spanish (0.87) [37] and Turkish (0.86) [38].…”

Cross-cultural Translation, Adaptation, and Psychometric Testing of the Roland-Morris Disability Questionnaire Into Modern Standard Arabic

“…26 , 31 , 34 Previous studies also found the RMDQ easy to administer, with few misunderstandings or declining participation, or requiring major adjustments. 11,13,20,26,30,33 The simplifi ed Chinese 31 and Persian 15 versions found missing data for the Oswestry Disability Index (ODI) when compared with the RMDQ particularly in the Sex Life subscale, which the RMDQ does not contain. The ODI was adapted to Tunisian Arabic.…”

Adaptación cultural y validación de la versión chilena del Cuestionario de Discapacidad Roland-Morris

“…La magnitud de esta correlación entre dolor y discapacidad en nuestro trabajo es menor que la reportada en trabajos previos, como en la validación tunesina 5 , coreana 11 , así como también en el trabajo original de Roland y Morris 14 . A diferencia de estos trabajos, nuestra muestra no estaba constituida por personas con dolor crónico en el momento de la evaluación, lo que puede explicar la menor relación observada entre discapacidad y dolor en nuestros pacientes.…”

“…Estas validaciones han mostrado buenos indicadores psicométricos, por lo que se cuenta con un instrumento adecuado para evaluar discapacidad por dolor lumbar en diferentes países. Citamos por ejemplo la versión alemana 4 , tunesina 5 , española 6 , brasilera 7 , china 8 , gujarati (India) 9 , japonesa 10 y coreana 11 . Sin embargo, carecemos de una versión validada en Chile, que nos permita usar con propiedad este instrumento en nuestro país.…”