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African-Americans and Native Americans have decreased 25(OH)D levels.

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posted on 2014-04-11, 03:26 authored by Lauren L. Ritterhouse, Rufei Lu, Hemangi B. Shah, Julie M. Robertson, Dustin A. Fife, Holden T. Maecker, Hongwu Du, Charles G. Fathman, Eliza F. Chakravarty, R. Hal Scofield, Diane L. Kamen, Joel M. Guthridge, Judith A. James

(A) Median 25(OH)D levels for African-Americans (n = 125), Native Americans (n = 179), and European-Americans (n = 470). Error bars represent interquartile range. ***p<0.001, Kruskal-Wallis test with Dunn's multiple comparison; p<0.05, Shapiro-Wilk and D'Agostino normality test. (B) Frequency of vitamin D severe deficiency (<12 ng/mL) and vitamin D deficiency (12–20 ng/mL) in African-Americans, Native Americans, and European Americans. Each symbol represents one individual.

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