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A and B, Scatterplot demonstrating lower SitHt/Ht in NHB children throughout childhood when compared with NHW and Mexican American children. C, Distribution of Z-scores in each ancestry when a single centile chart for the entire US population is used to calculate SitHt/Ht Z-scores. C, NHB children will have SitHt/Ht z-scores of approximately −0.6, whereas NHW and Mexican American children will have an average z-score of +0.3.
