Level of agreement of the 1987 ACR and 2010 ACR/EULAR rheumatoid arthritis classification criteria: an analysis based on ESPOIR cohort data.

Abstract

BACKGROUND In 2010, new classification criteria for rheumatoid arthritis (RA) were developed. OBJECTIVE To assess agreement between 1987 American College of Rheumatology (ACR) and 2010 ACR/European League Against Rheumatism (EULAR) criteria and the potential source of discordance, based on ESPOIR cohort data. METHODS 813 early arthritis patients were… (More)
DOI: 10.1136/annrheumdis-2011-200259

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