© 2012, American College of Rheumatology 2012 Provisional Classification Criteria for

This criteria set has been approved by the European League Against Rheumatism (EULAR) Executive Committee and the American College of Rheumatology (ACR) Board of Directors as Provisional. This signifies that the criteria set has been quantitatively validated using patient data, but it has not undergone validation based on an external data set. All EULAR/ACR-approved criteria sets are expected to undergo intermittent updates. The American College of Rheumatology is an independent, professional, medical and scientific society which does not guarantee, warrant, or endorse any commercial product or service. The objective of this study was to develop Euro-pean League Against Rheumatism/American College of Rheumatology classification criteria for polymyalgia rheumatica (PMR). Candidate criteria were evaluated in a 6-month prospective cohort study of 125 patients with new-onset PMR and 169 non-PMR comparison This article is published simultaneously in the April 2012 issue of Annals of the Rheumatic Diseases