Table 1.
Baseline characteristics of all randomized participants
| Vitamin D Arm (N=46) |
Placebo (N=47) |
P Value* | |
|---|---|---|---|
| Mean (SD) | |||
| Age (years) | 39.3 (12.3) | 34.7 (11.3) | 0.07 |
| Body mass index (kg/m2) | 33.5 (5.2) | 34.3 (6.6) | 0.48 |
| Serum 25(OH)D# (ng/ml) | 14.7 (5.4) | 14.3 (5.6) | 0.71 |
| Serum calcium (mg/dl) | 9.5 (0.3) | 9.5 (0.4) | 0.98 |
| Serum phosphate (mg/dl) | 3.4 (0.5) | 3.5 (0.5) | 0.79 |
| Serum parathyroid hormone (pg/ml) | 45.5 (19.6) | 43.7 (17.9) | 0.65 |
| Serum creatinine (mg/dl) | 0.8 (0.2) | 0.8 (0.2) | 0.42 |
| eGFR% (ml/min/1.73m2) | 104 (18) | 112 (20) | 0.08 |
| Systolic blood pressure (mmHg) | 118 (10) | 118 (10) | 0.98 |
| Diastolic blood pressure (mmHg) | 77 (7) | 77 (8) | 0.68 |
| N (%) | |||
| Black (%) | 15 (33) | 16 (34) | 0.56 |
| Men (%) | 15 (33) | 16 (34) | 0.88 |
| Median (IQR) | |||
| Urine sodium (mmol/day) | 293 (217 – 397) | 312 (232 – 400) | 0.68 |
| Urine microalbumin (mg/day) | 8.0 (4.4 – 16.4) | 6.8 (3.6 – 13.8) | 0.42 |
| Urine creatinine (mg/day) | 1479 (1302 – 1995) | 1626 (1317 - 1921) | 0.60 |
*
T-test used for normally distributed continuous variables and Wilcoxon used for non-normally distributed variables and Chi-squared test for categorical variables.
#
25(OH)D - 25-hydroxyvitmain D
%
eGFR – estimated glomerular filtration rate.