From: The frequency of and risk factors for osteoporosis in Korean patients with rheumatoid arthritis
Total | Osteoporosis | Osteopenia | Normal | p | |
---|---|---|---|---|---|
(N = 1322) | (N = 619) | (N = 582) | (N = 121) | ||
Age | 61.2 ± 8.2 | 63.7 ± 8.2 | 59.8 ± 7.3 | 55.1 ± 6.6 | <0.001 |
BMI (kg/m2) | 22.9 ± 3.1 | 22.0 ± 3.2 | 23.4 ± 2.9 | 24.7 ± 3.3 | <0.001 |
Disease duration (yrs) | 12.1 ± 9.9 | 13.9 ± 10.6 | 10.9 ± −9.3 | 9.1 ± −8.7 | <0.001 |
Previous fracture (N, %) | |||||
Vertebrae | 40 (3.0) | 23 (1.7) | 17 (1.3) | 0 (0.0) | 0.090 |
Femur | 24 (1.8) | 19 (1.4) | 5 (0.4) | 0 (0.0) | 0.004 |
Wrist | 66 (5.0) | 38 (2.9) | 27 (2.0) | 1 (0.1) | 0.042 |
Upper arm | 16 (1.2) | 11 (0.8) | 5 (0.4) | 0 (0.0) | 0.154 |
Othersa | 171 (12.9) | 95 (7.2) | 65 (74.9) | 11 (0.8) | 0.041 |
Use of GC (N, %) | 1027 (77.7) | 498 (80.5) | 439 (75.4) | 90 (74.4) | 0.074 |
Current dose of GC (mg/day) | 4.3 ± 2.5 | 4.4 ± 2.7 | 4.2 ± 2.4 | 4.4 ± 2.1 | 0.581 |
Cumulative dose of GC (g*mo)b | 5.4 ± 7.0 | 6.7 ± 7.7 | 4.4 ± 6.4 | 3.6 ± 6.1 | <0.001 |
HAQ (0–3) | 0.9 (1.0) | 1.0 (1.1) | 0.8 (0.9) | 0.6 (0.9) | <0.001 |
DAS28-ESR | 4.0 (1.8) | 3.9 (1.9) | 4.0 (1.8) | 3.8 (1.5) | 0.120 |
ESR (mm/h) | 26.0 (32.0) | 25.0 (32.0) | 28.0 (33.0) | 24.0 (27.0) | 0.240 |
CRP (mg/dL) | 0.3 (0.8) | 0.3 (0.8) | 0.3 (0.9) | 0.2 (0.5) | 0.058 |
RF, positivity (N, %) | 1158 (87.7) | 545 (88.2) | 510 (87.6) | 103 (85.1) | 0.644 |
ACPA, positivity (N, %) | 899 (84.3) | 395 (83.5) | 418 (85.5) | 86 (81.9) | 0.551 |