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Rheumatology 2002; 41: 121-123
© 2002 British Society for Rheumatology

Editorials

Epidemiology of disability in rheumatoid arthritis

T. K. Kvien

Oslo City Department of Rheumatology, Diakonhjemmet Hospital, Box 23 Vinderen, N-0319 Oslo, Norway

Physical disability is one of the most widely used outcome measures in clinical studies and is recommended as one of the core measures both in controlled clinical trials [1] and in longitudinal observational studies [2]. Several instruments are available for measuring disability. Most commonly used are the Health Assessment Questionnaire (HAQ) [3] and the Arthritis Impact Measurements Scales (AIMS and AIMS2) [4]. The generic instruments SF-36 [5] and the Nottingham Health Profile [6] are also available. In general, these measures are strongly correlated to each other. In a large and representative sample of RA patients, we found that SF-36 physical functioning scale correlated with MHAQ (-0.69) and AIMS2 physical (-0.73), and the correlation between MHAQ and AIMS2 physical was 0.85 [7]. However, the scales behave differently . . . [Full Text of this Article]

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