ACR score | |
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Medical diagnostics | |
Purpose | Quantify degree of symptoms in rheumatoid arthritis[1] |
ACR score is a scale to measure change in rheumatoid arthritis symptoms.[1] It is named after the American College of Rheumatology. The ACR score is more often used in clinical trials than in doctor patient-relationships, as it allows a common standard between researchers.
Different degrees of improvement are referred to as ACR20, ACR50, ACR70. ACR20 was initially proposed with ACR scoring, measuring a 20% improvement on a scale of 28 intervals. ACR50 and ACR70 were later proposed, corresponding to 50% and 70% improvements.[2]
The Rheumatoid Arthritis Severity Scale (RASS) is based on sections of the ACR scoring system.[3]
The 2010 ACR / EULAR Rheumatoid Arthritis Classification Criteria, which includes anti-CCP testing, has been developed to focus on early disease, and on features that are associated with persistent or erosive disease.[4]
Original source: https://en.wikipedia.org/wiki/ACR score.
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