Rasch analysis of the 23-item version of the Roland Morris Disability Questionnaire

Kent, P; Grotle, M; Dunn, K; Albert, H; Lauridsen, H

Abstract

OBJECTIVE: To determine the psychometric properties of the 23-item version of the Roland Morris Disability Questionnaire (RMDQ-23) and to quantify their stability across 2 cultures/languages and 2 types of care-settings. METHODS: Rasch analysis of data from 1,000 patients with low back pain from primary care (UK and Denmark) and secondary care (Denmark). RESULTS: The RMDQ-23 is unidimensional if local item dependency issues are accommodated, but contains several misfitting or overdiscriminating items, some poor targeting of items, and the scoring of 4-5 items is differentially affected by common clinical characteristics (such as age, gender, pain intensity, pain duration and care setting), depending on the country. CONCLUSION: As similar results have been found for the RMDQ-24, we believe it is timely to reconsider whether: (i) the RMDQ should be reconstructed using an item-response theory-based approach that includes consideration of new items and response options

Citation

Kent, P., Grotle, M., Dunn, K., Albert, H., & Lauridsen, H. (2015). Rasch analysis of the 23-item version of the Roland Morris Disability Questionnaire. Journal of Rehabilitation Medicine, 47(4), 356-364. https://doi.org/10.2340/16501977-1935

• Journal Article Type: Article
• Acceptance Date: Oct 22, 2014
• Online Publication Date: Jan 16, 2014
• Publication Date: Jan 13, 2015
• Deposit Date: Nov 30, 2023
• Journal: Journal of Rehabilitation Medicine
• Print ISSN: 1650-1977
• Publisher: Foundation for Rehabilitation Information
• Peer Reviewed: Peer Reviewed
• Volume: 47
• Issue: 4
• Pages: 356-364
• DOI: https://doi.org/10.2340/16501977-1935
• Keywords: Rehabilitation; Physical Therapy, Sports Therapy and Rehabilitation; General Medicine