Table 2.
Simple linear regression analysis and multiple linear stepwise regression analysis (n = 317).
| Variable | 25-hydroxyvitamin D (ng/mL) |
||||
|---|---|---|---|---|---|
| Simple linear regression analysis |
Multiple linear stepwise regression analysis |
||||
| R | P-value | β (95% CI) | t-value | P-value | |
| Age, yr | 0.00 | 0.50 | - | −0.10 | 0.92 |
| Lumbar spine BMD, g/cm2 | −0.04 | 0.30 | - | −0.53 | 0.60 |
| Femoral neck BMD, g/cm2 | −0.02 | 0.40 | - | −0.07 | 0.95 |
| Albumin, g/dL | 0.10 | 0.08 | - | 0.97 | 0.34 |
| Albumin-corrected calcium, mg/dL | −0.14 | 0.02 | −0.137 (−6.55 to −0.10) | −2.03 | 0.04 |
| Phosphate, mg/dL | −0.04 | 0.27 | - | −0.32 | 0.75 |
| Tartrate-resistant acid phosphatase 5b, mU/dL | 0.04 | 0.29 | - | 0.58 | 0.56 |
| Undercarboxylated osteocalcin, ng/mL | −0.09 | 0.10 | - | −1.15 | 0.25 |
| Existing fragility fracture | - | - | - | 0.06 | 0.96 |
| Fracture site | |||||
| Vertebral fracture | - | - | - | −0.29 | 0.77 |
| Hip fracture | - | - | - | −0.96 | 0.34 |
| Distal radius fracture | - | - | - | 1.08 | 0.28 |
| Proximal humerus fracture | - | - | - | 0.97 | 0.33 |
| Place of residence | |||||
| Home | - | - | - | −0.88 | 0.38 |
| Hospital | - | - | - | 0.56 | 0.57 |
| Facility | - | - | - | 0.67 | 0.51 |
R = correlation coefficient; β = standardized correlation coefficients (95% confidence interval [CI]); BMD, bone mineral density.