. Author manuscript; available in PMC: 2013 May 1.

Published in final edited form as: Kidney Int. 2012 Jun 27;82(10):1061–1070. doi: 10.1038/ki.2012.222

Table 4.

Univariate analysis of serum 24,25(OH)₂D.

Predictor variables	β	SE β	P value
Age (years)	−0.0054	0.00857	0.5285
BMI (kg/m²)	−0.0016	0.01145	0.8899
Serum PTH (pg/ml)	−0.0018	0.00052	0.0016
Diabetes mellitus	0.09148	0.13541	0.5061
Serum FGF-23 (pg/ml)	−0.0029	0.00121	0.0225
Serum 25(OH)D (ng/ml)	0.02796	0.01237	0.0336
Serum 1,25(OH)₂D (pg/ml)	0.00416	0.0347	0.2437
Serum Ca (mg/dl)	0.37953	0.22884	0.1108
Serum PO₄ (mg/dl)	0.06079	0.09631	0.5344
Serum creatinine (mg/dl)	−0.1981	0.09307	0.0442
eGFR (ml/min/1.73 m²)	−0.0390	0.00228	0.1009
Urine ACR(mg/g)	−0.0199	0.03495	0.5734
Fractional excretion of PO₄ (%)	−0.01204	0.00549	0.0392
Fractional excretion of Ca (%)	−0.02414	0.04732	0.6149

24,25(OH)₂D, 24,25-dihydroxyvitamin D; BMI, body mass index; PTH, parathyroid hormone; FGF-23, fibroblast growth factor-23; 25(OH)D, 25-hydroxyvitamin D; 1,25(OH)₂D, 1,25-dihydroxyvitamin D; eGFR, estimated glomerular filtration rate; ACR, albumin creatinine ratio; PO4; phosphorous; Ca, calcium.