From: Differing specificities and isotypes of anti-citrullinated peptide/protein antibodies in palindromic rheumatism and rheumatoid arthritis
PR
RA
p
0
23 (42.6%)
12 (22.2%)
0.024
1
17 (31.5%)
2
10 (18.5%)
15 (27.8%)
0.25
3
4 (7.4%)
0.08
≥2
14 (25.9%)
25 (46.3%)
0.028