Table 3.

Cox regression models

Models of Patient Survival (event n = 25)RR (95% CI)aP
Model 0 (GF = 8.1; P = 0.004)
    unadjusted0.571 (0.361 to 0.905)0.013
Model 1 (GF = 22.4; P < 0.0001)
    age (y), DM, gender (masculine)0.606 (0.391 to 0.942)0.026
Model 2 (GF = 16.2; P = 0.003)
    albumin (g/L), hemoglobin (g/L), phosphate (mMol/L)0.628 (0.409 to 0.963)0.030
Model 3 (GF = 13.3; P = 0.004)
    systolic arterial pressure (mmHg), smoking habit (exposure)0.536 (0.328 to 0.875)0.011
Model 4 (GF = 22; P < 0.0001)
    vitamin D supplementation (exposure), CKD stage 5D0.585 (0.379 to 0.902)0.013
Model 5 (GF = 22; P < 0.0001)
    aortic calcification score on CT(log), PWV (m/s)0.582 (0.368 to 0.923)0.021
  • GF, goodness-of-fit; DM, diabetes mellitus; CT, computed tomography; PWV, pulse wave velocity.

  • a RR (95% CI); relative risk (95% confidence interval), summarizing the risk of a 10 ng/ml increase in the 25-hydroxyvitamin D levels for each noncumulative Cox regression model (unadjusted and then adjusted for the described variables).