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© 1981 British Society for Rheumatology


research-article

THE ASSESSMENT OF DISEASE ACTIVITY IN RHEUMATOID ARTHRITIS USING A MULTIVARIATE ANALYSIS

R. K. MALLYA and B. E. W. MACE

Department of Rheumatology, Lewisham Hospital London SE13

Correspondence to: Requests for reprints to Dr. R. K. Mallya.

A simple method of assessing ‘index of disease activity’ (IDA) in rheumatoid arthritis (RA) using a multivariate analysis (MVA) comprising morning stiffness (MSX pain scale (PS), grip strength (GS), articular index (Al), haemoglobin (Hb) and erythrocyte sedimentation rate (ESR) is described. The IDA of 99 patients with RA was assessed using MVA. The method could be used reliably and readily for random or longitudinal assessment, in drug trials and for comparing disease activity with other objective indices.


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