Table 1

 Baseline characteristics of the patients with rheumatoid arthritis (n = 102)

Demography
Age (years), mean (SD)53 (13)
Sex, female, n (%)84 (82)
Disease duration years, median (range)8 (1–49)
Erosive disease, n (%)84 (82)
IgM-RF positive, n (%)75 (74)
Disease activity
DAS-28, mean (SD)5.4 (1.2)
ESR (mm/h), mean (SD)32 (23)
CRP (mg/l), median (range)14 (1–174)
Drugs
Methotrexate, n (%)98 (96)
Prednisone, n (%)46 (45)
Anti-osteoporotic drugs, n (%)26 (26)
BMD
BMD, bone mineral; CRP, C reactive protein, DAS-28, Disease Activity Score of 28 joints; ESR, erythrocyte sedimentation rate; IgM-RF, immunoglobulin G-rheumatoid factor.
Vertebral spine (g/cm2), mean (SD), n = 1020.993 (0.19)
t Score, mean (SD)−0.82 (1.6)
z Score, mean (SD)−0.09 (1.5)
Total hip (g/cm2), mean (SD), n = 890.830 (0.14)
t Score, mean (SD)−1.02 (1.2)
z Score, mean (SD)−0.51 (1.2)
Hand, mean (SD), n = 530.497 (0.98)