Additional file 1: of An investigation of the added value of an ACPA multiplex assay in an early rheumatoid arthritis setting

Diagnosis of anti-CCP-2-negative non-RA patients. Diagnoses of anti-CCP-2-negative non-RA patients (n = 135) as assessed by an experienced rheumatologist after 1 year of follow-up stratified for multiplex positivity. CCP cyclic citrullinated peptide, RA rheumatoid arthritis. (PDF 14 kb)