The ARA 1987 revised criteria select patients with clinical rheumatoid arthritis from a population based cohort of subjects with chronic rheumatic diseases registered for drug reimbursement.

Abstract

We tested the traditional format of the American Rheumatism Association (ARA) 1987 revised criteria for the classification of rheumatoid arthritis (RA) in a cohort of 220 subjects with drug reimbursement for chronic rheumatic diseases extracted from the National Sickness Insurance Register, in a community of 18,000 people in Finland. One hundred and nine of… (More)

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