CRP and rheumatoid arthritis: After adjusting for the confounding factors (age at disease diagnosis, RF, sex, smoking history, and treatment with HCQ, biological agents, MTX, SAZ, and LEF), age (OR = 1.04, 95% CI = 1.02–1.05), CRP levels (OR = 1.01, 95% CI = 1.00–1.01), number of RA-affected types of joints (OR = 0.72, 95% CI = 0.54–0.94), and treatment with TCM (OR = 0.42, 95% CI = 0.28–0.64) were found to be related to a greater number of EAMs (Table 4).