Table 3.
Distribution of volumetric bone mineral density (vBMD) of the femoral neck within 25(OH)D quartiles adjusted for age, race, latitude, season, height and BMI in men ages 65 years and older, with and without adjustment for parathyroid hormone level (PTH).
| Outcome Measures | Quartile 1 | Quartile 2 | Quartile 3 | Quartile 4 | p-trend |
|---|---|---|---|---|---|
| 25(OH)D (ng/ml; range) | (11.4-18.8) | (20.7-23.9) | (25.6-28.4) | (29.6-40) | |
| Femoral Neck Measures (n) | 221 | 219 | 226 | 222 | |
| Integral vBMD (g/cm3) | |||||
| Adjusted Mean | 0.289 | 0.289 | 0.300 | 0.308 | <0.001 |
| 95% CI | (0.281, 0.298) | (0.281, 0.298) | (0.292, 0.309) | (0.298, 0.318) | |
| Further Adjusted for PTH | 0.290 | 0.290 | 0.300 | 0.308 | 0.001 |
| 95% CI | (0.282, 0.299) | (0.281, 0.298) | (0.292, 0.309) | (0.299, 0.317) | |
| Cortical vBMD (g/cm3) | |||||
| Adjusted Mean | 0.528 | 0.525 | 0.534 | 0.540 | 0.03 |
| 95% CI | (0.519, 0.515) | (0.515, 0.534) | (0.525, 0.544) | (0.529, 0.550) | |
| Further Adjusted for PTH | 0.530 | 0.525 | 0.534 | 0.539 | 0.07 |
| 95% CI | (0.521, 0.539) | (0.515, 0.535) | (0.524, 0.544) | (0.529, 0.550) | |
| Trabecular vBMD (g/cm3) | |||||
| Adjusted Mean | 0.075 | 0.075 | 0.084 | 0.084 | 0.006 |
| 95% CI | (0.069, 0.081) | (0.068, 0.082) | (0.078, 0.091) | (0.077, 0.091) | |
| Further Adjusted for PTH | 0.075 | 0.075 | 0.084 | 0.084 | 0.007 |
| 95% CI | (0.068, 0.081) | (0.068, 0.082) | (0.078, 0.091) | (0.077, 0.091) | |