Figure 2From: The relationship between the presence of anti-cyclic citrullinated peptide antibodies and clinical phenotype in very early rheumatoid arthritis Clinically apparent synovial swelling in individuals with and without anti-CCP antibody. Joint involvement expressed as a percentage of the patients seen in clinic, with 95% confidence intervals. Black bars = anti-CCP antibody positive patients. White bars = anti-CCP antibody negative patients. MCP = metacarpophalangeal; PIP = proximal interphalangeal; MTP = metatarsophalangeal.Back to article page