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. 2014 Feb 3;14:32. doi: 10.1186/1471-2431-14-32

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Copyright © 2014 Rodd et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Comparison of smoothed and empiric centiles: figures A (boys) and B (girls) compare WHO smoothed centiles with those calculated from the NCHS-R dataset. For the latter, smoothed and empiric centiles (data binned by year of age) are compared for boys (C) and girls (D). The individual gray points depict raw data.