<unk>  is a scale to measure change in rheumatoid arthritis symptoms. It is named after the American College of Rheumatology. The<unk>  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<unk> 20,<unk> 50,<unk> 70.<unk> 20 was initially proposed with<unk> ng, measuring a 20% improvement on a scale of 28 intervals.<unk> 50 and<unk> 70 were later proposed, corresponding to 50% and 70% improvements. The Rheumatoid Arthritis Severity Scale (RASS) is based on sections of the<unk> ng system. The 2010<unk>  / 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.
ACR score
Manchester score
Rockall score
FOUR score
ThroLy score
Geneva score
BODE index
Krenning score