Table 3: Association between serum 25-OH vitamin D and cardiovascular risk factors in patients with chronic kidney disease.

Cardiovascular risk factors Serum 25-0H vitamin D p-value
Normal (n = 28) Insufficient/deficient (n = 109)
Demographic
Age 59.1 ± 16.2 57.5 ± 15.3 0.633
Gender
Male 17 (60.7%) 45 (41.3%) 0.065
Female 11 (39.3%) 64 (58.7%)
Race
Non-black 22 (78.6%) 89 (81.6%) 0.711
Black 6 (21.4%) 20 (18.4%)
Cardiovascular risk factors
BMIa 25.5 ± 4.7 27.4 ± 5.5 0.092
Obesity 2 (7.1%) 27 (26.0%) 0.033*
Inactivity 19 (70.4%) 85 (80.2%) 0.270
Hypertension 25 (89.3%) 97 (89.0%) 0.964
DM 6 (21.4%) 42 (38.9%) 0.085
CAD 3 (11.1%) 17 (15.6%) 0.556
History of stroke 7 (25.9%) 14 (13.0%) 0.096
Dyslipidemia 15 (53.6%) 70 (64.2%) 0.300
Laboratory findings
Hemoglobin a b 12.77 ± 1.88 11.45 ± 1,68 0.004*
Cholesterola c 157 (125; 176) 174 (151; 206) 0.028*
PTHa 176 (107; 277) 261 (160; 382) 0.060
Calciuma 9.43 ± 0.57 9.09 ± 0.65 0.015*
Phosphorus 3.79 ± 1.45 4.10 ± 1.20 0.324
Albuminc 4.05 ± 0.46 3.93 ± 0.52 0.391
AP 75 (55; 97) 90 (69; 117) 0.203
Creatinine 2.21 (1.9; 3.1) 2.50 (1.9; 3.8) 0.434
GFR 26,6 ± 8,9 25,0 ± 11,8 0,501

*Statistically significant association (p < 0.05); aStatistically significant difference between the normal and deficient groups (p < 0.05); bStatistically significant difference between the normal and insufficient groups (p < 0.05); cStatistically significant difference between the insufficient and deficient groups (p < 0.05).

Abbreviations: BMI: Body mass index; CAD: Coronary artery disease; ADPKD: Autosomal dominant polycystic kidney disease; CPN: Chronic pyelonephritis; Vit D: 25-OH vitamin D; PTH: Parathyroid hormone; AP: Alkaline phosphatase; GFR: glomerular filtration rate.