CRP and rheumatoid arthritis: Among the RA subgroup, there was a stronger significant correlation between OST and SJC (rho = 0.486; p = 0.004), TJC (rho = 0.372;p = 0.031), DAS28-ESR (r = 0.426; p = 0.015) and DAS28-CRP (r = 0.506; p = 0.004).