Table 2.
Baseline Characteristics for Individuals Randomized to Low‐Dose (400 IU/d) Versus High‐Dose (4000 IU/d) Vitamin D Supplementation
| Low‐Dose Vitamin D (n=144) | High‐Dose Vitamin D (n=145) | P Value | |
|---|---|---|---|
| Age, y | 36.0 (28.0, 45.0) | 38.0 (27.0, 45.0) | 0.92* |
| Sex | |||
| Male | 0.7 | 0.7 | 0.28 † |
| Race | |||
| White | 0.5 | 0.4 | |
| Non‐White ‡ | 0.5 | 0.6 | 0.34 † |
| BMI, kg/m2 | 28.0 (25.0, 30.7) | 26.6 (23.7, 31.0) | 0.075* |
| 25‐OH‐D, ng/mL | 15.4 (11.7, 19.6) | 14.6 (9.2, 19.7) | 0.14* |
| Mean clinic systolic BP, mm Hg | 129 (124, 137) | 131 (125, 136) | 0.32* |
| Mean clinic diastolic BP, mm Hg | 83 (77, 88) | 83 (78, 88) | 0.69* |
25‐OH‐D indicates 25‐hydroxyvitamin D; BMI, body mass index; and BP, blood pressure. Continuous variables are presented as median (lower quartile, upper quartile); categorical variables are presented as percentages of total number.
*
P value represents nonparametric Wilcoxon rank sum test to compare continuous variables.
†
P value represents Pearson chi‐square test to compare categorical variables.
‡
Non‐White includes Black,Asian, and Native Hawaiian/Other Pacific Islander.