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- Title
Rasch analysis of the Western Ontario MacMaster questionnaire (WOMAC) in 2205 patients with osteoarthritis, rheumatoid arthritis, and fibromyalgia.
- Authors
Wolfe, F; Kong, S X
- Abstract
Advances in health measurement have led to the application of Rasch Item Response Theory (IRT) analysis (Rasch analysis) to evaluate instruments measuring health status and quality of life of patients, including the Health Assessment Questionnaire and SF-36. This study investigated the extent to which the Western Ontario MacMaster osteoarthritis questionnaire (WOMAC) satisfies the Rasch model, particularly in respect to unidimensionality, item separation, and linearity.
- Publication
Annals of the rheumatic diseases, 1999, Vol 58, Issue 9, p563
- ISSN
0003-4967
- Publication type
Journal Article
- DOI
10.1136/ard.58.9.563