CRP and rheumatoid arthritis: From visit T0 to visit T12, the mean CRP levels declined in RA patients from 23.5 mg/l (± 33.6; 95% CI: 9.9–37.1) to 2.7 mg/l (± 3.4; 95% CI: 1.0–4.3) and in PsA patients from 13.3 mg/l (± 18.0; 95% CI: 5.7–20.9) to 8.1 mg/l (± 16.2; 95% CI: 0.1–16.2).