Table 1.
Major characteristics of the included participants
| Variables | High dose (n = 41) | Low dose (n = 42) | 𝑝-value |
|---|---|---|---|
| Age (year) | 8.0 (6.0, 10.0) | 8.0 (6.0, 11.0) | 0.379 |
| Gender | |||
| Male | 33 (80.5%) | 36 (85.7%) | 0.366 |
| Female | 8 (19.5%) | 6 (14.3%) | |
| Daily outdoor activity M (SD) | 48.06 ± 34.72 | 44.93 ± 26.51 | 0.674 |
| BMI | |||
| BMI < 85th | 31(75.6%) | 27(64.3) | |
| BMI 85–95 | 9(22) | 12(28.6) | 0.42 |
| BMI > 95 | 1(2.4) | 3(7.1) | |
| Vitamin D status | |||
| Optimal | 4 (9.8%) | 3 (7.1%) | 0.842 |
| Insufficient | 35 (85.3%) | 36 (85.8%) | |
| Deficient | 2 (4.9%) | 3 (5.8%) | |
Notes: Data are presented as mean ± SD or medians (P25, P75). Abbreviations: BMI = Body Mass Index, SD = Standard Deviation