CRP and rheumatoid arthritis: A higher prevalence of ESR (74.3% vs 55.2%, p < 0.001), CRP (61.0% vs 39.5%, p < 0.001), RF (88.6% vs 42.9%, p < 0.001) and anti-CCP (76.6% vs 25.0%, p < 0.001) was detected in RA/SS than pSS controls.