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A. Within comparisons of 25-hydroxyvitamin D3 concentration in vitamin D supplemented and placebo groups. Medians and 95% confidence intervals are presented. Statistical analysis was conducted with Wilcoxon. B. Deltas of 25-hydroxyvitamin D3 concentration are compared between vitamin D supplemented and placebo groups. Medians and 95% confidence intervals are presented. Statistical analysis was performed with Mann-Whitney U test.
