Introduction
Materials and methods
Bone mineral density
Bone material strength
Fracture history
Statistical analyses
Results
Subjects (n = 211) | BMSi r
|
p
| Weight and operator-adjusted BMSi
β
|
p
| Fully adjusted BMSi
β
|
p
| |
---|---|---|---|---|---|---|---|
Age (years) | 78.3 ± 1.1 | −0.07 | 0.35 | ||||
Weight (kg) | 69.1 ± 12.6 | −0.14 | 0.04 | ||||
Height (cm) | 161.1 ± 5.8 | 0.04 | 0.56 | ||||
Walking speed (m/s) | 2.0 ± 0.4 | 0.04 | 0.59 | ||||
Calcium intake (mg/day) | 743 ± 407 | 0.03 | 0.67 | ||||
Total hip aBMD (g/cm2) | 0.796 ± 0.112 | 0.05 | 0.51 | 0.14 | 0.04 | 0.13 | 0.06 |
Femur neck aBMD (g/cm2) | 0.652 ± 0.100 | 0.05 | 0.45 | 0.13 | <0.05 | 0.13 | 0.06 |
Lumbar spine aBMD (g/cm2) | 0.934 ± 0.161 | 0.06 | 0.36 | 0.14 | <0.05 | 0.13 | 0.06 |
Radius aBMD (g/cm2) | 0.575 ± 0.078 | 0.08 | 0.22 | 0.17 | 0.02 | 0.16 | 0.03 |
Correlations between BMSi, anthropometrics, aBMD, and medication use
BMSi | BMSi | BMSi | BMSi | |||
---|---|---|---|---|---|---|
Current user | Non-user |
p
| Ever user | Never user |
p
| |
Smoking | 75.7 ± 8.9 (n = 18) | 75.6 ± 7.5 (n = 193) | 0.95 | 75.0 ± 8.0 (n = 89) | 76.1 ± 7.3 (n = 122) | 0.34 |
Bisphosphonates | 77.1 ± 5.7 (n = 18) | 75.5 ± 7.7 (n = 193) | 0.28 | 77.8 ± 7.7 (n = 40) | 75.1 ± 7.5 (n = 171) | 0.05 |
Glucocorticoids (p.o.) | 81.7 ± 7.5 (n = 5) | 75.5 ± 7.5 (n = 206) | 0.16 | 78.0 ± 7.8 (n = 20) | 75.4 ± 7.5 (n = 191) | 0.17 |
BMSi and the association with aBMD
BMSi and the absence of association with prevalent fractures
No fracture | All fractures | Vertebral fractures | Peripheral fractures | Osteoporotic fractures | |
---|---|---|---|---|---|
n = 63 |
n = 117 |
n = 58 |
n = 53 |
n = 89 | |
BMSi | 75.7 ± 7.9 | 76.1 ± 7.4 | 77.1 ± 7.5 | 75.5 ± 7.0 | 76.7 ± 7.3 |
BMSi, adjusted for weight and operator | 75.7 ± 7.1 | 76.0 ± 6.9 | 76.9 ± 6.9 | 75.6 ± 6.7 | 76.7 ± 6.8 |
Age (years) | 78.2 ± 1.1 | 78.3 ± 1.1 | 78.2 ± 1.1 | 78.4 ± 1.0 | 78.3 ± 1.1 |
Weight (kg) | 70.2 ± 13.4 | 68.6 ± 12.9 | 66.9 ± 13.2 | 68.7 ± 12.8 | 68.3 ± 13.2 |
Height (cm) | 162.1 ± 5.7 | 160.6 ± 6.2 | 160.3 ± 6.0 | 160.5 ± 6.1 | 160.2 ± 6.4 |
Walking speed (m/s) | 2.0 ± 0.4 | 2.0 ± 0.4 | 2.0 ± 0.4 | 2.0 ± 0.5 | 2.0 ± 0.4 |
Calcium intake (mg/day) | 682 ± 362 | 773 ± 443 | 783 ± 465 | 861 ± 454* | 813 ± 461 |
Total hip aBMD (g/cm2) | 0.843 ± 0.109 | 0.773 ± 0.114*** | 0.765 ± 0.112*** | 0.751 ± 0.123*** | 0.770 ± 0.114*** |
Femur neck aBMD (g/cm2) | 0.691 ± 0.094 | 0.638 ± 0.104*** | 0.636 ± 0.106** | 0.627 ± 0.120** | 0.639 ± 0.104** |
Lumbar spine aBMD (g/cm2) | 0.960 ± 0.148 | 0.912 ± 0.167 | 0.917 ± 0.171 | 0.881 ± 0.153** | 0.915 ± 0.171 |
Radius aBMD (g/cm2) | 0.581 ± 0.085 | 0.571 ± 0.075 | 0.572 ± 0.081 | 0.554 ± 0.078 | 0.570 ± 0.077 |
All fractures | Vertebral fractures | Peripheral fractures | Osteoporotic fractures | |
---|---|---|---|---|
n = 117 |
n = 58 |
n = 53 |
n = 89 | |
OR (CI) | OR (CI) | OR (CI) | OR (CI) | |
BMSi | 0.89 (0.63–1.27) | 0.67 (0.43–1.05) | 0.96 (0.61–1.50) | 0.74 (0.51–1.09) |
Total hip aBMD | 1.98 (1.34–2.93) | 1.95 (1.20–3.17) | 2.71 (1.57–4.67) | 1.92 (1.26–2.93) |
Femur neck aBMD | 1.73 (1.19–2.51) | 1.60 (1.00–2.55) | 1.79 (1.12–2.87) | 1.61 (1.06–2.43) |
Lumbar spine aBMD | 1.30 (0.92–1.84) | 1.15 (0.75–1.76) | 1.87 (1.13–3.09) | 1.22 (0.84–1.77) |
Radius aBMD | 1.06 (0.74–1.51) | 0.88 (0.57–1.36) | 1.41 (0.89–2.21) | 0.98 (0.66–1.46) |