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Table 1 Patient characteristics at baseline and at 2-year follow-up

From: Hand bone loss as an outcome measure in established rheumatoid arthritis: 2-year observational study comparing cortical and total bone loss

Variable n Baseline At 2-year follow-up
Demographic    
   Age (years) 215 57.4 (49.1–64.7)  
   Female 215 170 (79.0%)  
   Menopause 170 111 (65.3%)  
   Body mass index (kg/m2) 215 23.9 (21.3–26.2) 24.0 (21.5–26.2)
   Smoker 210 65 (31.0%) 67 (31.9%)
Disease    
   Disease duration (years) 215 9 (4–16)  
   Age at disease onset (years) 215 45.0 (33.0–53.0)  
   Rheumatoid factor-positive 202 97 (48.0%)  
   Physician's global assessment score (visual analogue scale, 0–100 mm) 203 19.0 (8.0–39.8) 17.6 (8.5–30.0)
   Modified Health Assessment Questionnaire (range 1–4) 214 1.50 (1.13–1.75) 1.50 (1.13–1.87)
   Erythrocyte sedimentation rate (mm/hour) 210 16 (9–27) 14 (8–27)
   Disease activity score including 28 joints 202 4.04 (3.17–4.96) 4.26 (3.36–5.06)
Medication    
   Ever user of disease-modifying antirheumatic drugs 213 177 (83.1%) 177 (83.1%)
   Corticosteroids 208 79 (37.9%) 85 (40.9%)
   User of corticosteroids in the 2-year period 208   93 (44.7%)
   Antiresorptive osteoporosis treatment 209 47 (22.5%) 68 (32.5%)
   Ever user of antiresorptive osteoporosis treatment 209   92 (44.0%)
   Calcium and/or vitamin D 210 113 (53.8%) 155 (73.8%)
  1. Data presented as the median (interquartile range) or as the absolute value (%).