Table 1.
Baseline characteristics among different groups *.
| Characteristics | Total | Groups | ||||
|---|---|---|---|---|---|---|
| Placebo (N = 16) |
600 IU/day (N = 15) |
2000 IU/day (N = 17) |
4000 IU/day (N = 16) |
p-Values | ||
| Age (year) | 26.0 ± 9.4 | 27.9 ± 10.4 | 26.3 ± 9.8 | 24.5 ± 8.5 | 25.5 ± 9.6 | 0.833 |
| Male (N) | 11 (17) | 4 (25) | 2 (13) | 3 (18) | 2 (13) | 0.843 |
| BMI (kg/m2) | 35.7 ± 7.2 | 36.2 ± 8.1 | 34.6 ± 5.6 | 37.1 ± 7.7 | 34.8 ± 7.3 | 0.636 |
| Obese (N) | 51 (80) | 12 (75) | 12 (80) | 14 (82) | 13 (81) | 0.974 |
| A1c (%) | 5.4 ± 0.4 | 5.4 ± 0.5 | 5.4 ± 0.5 | 5.3 ± 0.5 | 5.5 ± 0.3 | 0.422 |
| 25(OH)D (nmol/L) | 36.9 ± 11.3 | 39.7 ± 14.7 | 35.0 ± 7.7 | 39.8 ± 10.7 | 32.9 ± 10.3 | 0.276 |
* Statistics display as mean ± SD for continuous variables, and N (%) for categorical variables. Baseline group differences of continuous variables were determined by ANOVA for normally distributed variables or by the Kruskal–Wallis test, otherwise. Fisher’s exact test was carried out on categorical variables. BMI, body mass index; 25(OH)D, 25-hydroxyvitamin D3.