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. Author manuscript; available in PMC: 2019 Nov 14.
Published in final edited form as: Pediatr Res. 2019 Feb 2;86(5):662–669. doi: 10.1038/s41390-019-0322-y

Figure 1: Effects of vitD intake on serum 25-D concentrations in children (all VDBP isoforms).

Figure 1:

A) Mean 25-D (nmol/L) compared between Caucasian, Hispanic and African-American children regularly reaching the vitD RDA (normalized as >25 IU/kg; representing 400–600 IU daily intake), or below the RDA at time of annual serum collection. Statistics calculated using all available serum samples or the average of 25-D values for each subject’s samples. B) Direct comparisons of serum 25-D in different groups of children meeting or exceeding vitD RDA; all samples, average of each subject’s samples, or single sample from each subject at time of highest daily vitD intake (80 total subjects). C) Comparisons of mean 25-D within the same children who were both below and above the vitD RDA at different annual serum collections (55 total subjects).p-values <0.05 considered significant. Dashed line in each graph represents threshold serum concentration of ≥ 75 nmol/L 25-D.