From: Serial determination of cyclic citrullinated peptide autoantibodies predicted five-year radiological outcomes in a prospective cohort of patients with early rheumatoid arthritis
Anti-CCP2
P value
Yes
17.2 ± 21.1
9.7 ± 17.3
0.0021
NS
No
14.4 ± 16.3
2.7 ± 3.7
0.031