Comparison of patients’ characteristics according to bone mineral density (BMD) results.
| Characteristic | Total Patients, n = 130 | Normal BMD, n = 47 | Osteopenia, n = 50 | Osteoporosis, n = 33 | p* |
|---|---|---|---|---|---|
| Age, yrs median (range) | 52 (40–75) | 48 (41–72) | 53 (40–73) | 61 (41–75) | < 0.001 |
| Body mass index, kg/m2 median (range) | 27 (17–47) | 28 (17–39) | 27 (18–47) | 26 (17–39) | 0.10 |
| Duration since menopause, yrs median (range) | 5 (0–44) | 1 (0–23) | 7 (0–41) | 11 (0–44) | < 0.001 |
| Duration of RA, yrs median (range) | 8 (1–40) | 6.5 (1–35) | 6 (2–35) | 11 (1–40) | 0.08 |
| Global functional status III–IV, n (%) | 24 (19) | 7 (15) | 8 (16) | 9 (27) | 0.01 |
| HAQ-DI score, median (range) | 0.59 (0–2.3) | 0.5 (0–2.3) | 0.4 (0–2.2) | 0.6 (0.2–2.5) | 0.10 |
| Joint tenderness count, median (range) | 6 (0–40) | 6 (0–40) | 5 (0–40) | 6 (0–30) | 0.50 |
| Joint swelling count, median (range) | 3 (0–20) | 4 (0–20) | 2 (0–18) | 2 (0–16) | 0.20 |
| Prednisone doses, mg/day median (range) | 2.5 (0–12.5) | 0 (0–12.5) | 0 (0–12.5) | 5 (0–10) | 0.80 |
| Serum leptin, ng/ml median (range) | 23 (2–128) | 26 (2–82) | 24 (5–128) | 17 (4–77) | 0.10 |
↵* Comparisons between quantitative variables were by Kruskal-Wallis test. HAQ-DI: Health Assessment Questionnaire-Damage Index.