RA patients (n=18) Healthy controls (n=18)
Age mean ± SD in years 60.4 ± 13.8 46.4 ± 18.2
Female:Male  ratio 1:1.6 1:2
Duration of RA, y,  median (range) 12 (2-34)  
DASb median (range) 4.4 (1.26-7.5)  
Methotrexate, n (%) 10/18 (55.5)  
Prednisone, n (%) 4/18 (22.2)  
Plaquenil, n (%) 6/18 (33.3)  
RAa, rheumatoid arthritis; bDAS, disease activity score
Table 1: Baseline characteristics and disease parameters in RAa patients and healthy control subjects.