From: Diagnostic performance and predictive value of rheumatoid factor, anti-cyclic-citrullinated peptide antibodies and HLA-DRB1 locus genes in rheumatoid arthritis
OR (95%CI)
P value
Anti-CCP present
19.6 (2.1–48.5)
0.009
HLA-DRB1*04
5.1 (1.2–21.1)
0.03