Table 4. Univariate and Multivariate Analysis of the Factors Associated with FMD.
| Univariate* | Multivariate | |||
|---|---|---|---|---|
| r | p value | β | p value | |
| Age | NS | - | ||
| Female | 0.468 | 0.016 | 0.801 | 0.292 |
| Diabetes mellitus | NS | - | ||
| Cerebrovascular disease | -0.390 | 0.049 | -0.918 | 0.284 |
| Albumin (g/dL) | 0.550 | 0.004 | 3.642 | 0.012 |
| Total calcium (mg/dL) | NS | - | ||
| Phosphorus (mg/dL) | NS | - | ||
| Intact PTH (pg/mL) | NS | - | ||
| Magnesium (mg/dL) | 0.549 | 0.004 | 1.794 | 0.030 |
FMD, flow-mediated dilation; PTH, parathyroid hormone.
*Statistically significant (p<0.05) p values as assessed by Pearson's correlation, as well as β estimates and p values from multivariate regression models. The r2 of the multivariate model was 0.638. Variables known to influence FMD (age, sex, diabetes mellitus, history of cerebrovascular disease, albumin, calcium, phosphorus, intact PTH) were included in the multivariate analyses.