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. 2014 Apr 17;2(4):2325967114529703. doi: 10.1177/2325967114529703

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© The Author(s) 2014

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License (http://www.creativecommons.org/licenses/by-nc-nd/3.0/) which permits non-commercial use, reproduction and distribution of the work as published without adaptation or alteration, without further permission provided the original work is attributed as specified on the SAGE and Open Access page (http://www.uk.sagepub.com/aboutus/openaccess.htm).

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Figure 2. — Descriptive statistics of the data. (A) Average monthly incidence of injury by severity. (B) Annualized injury incidence/1000 hours of exposure for age groups <9 to <16 years. (C) Number of injuries/year for the 4 periods during the match. (D) Average monthly incidence of injury by competitive environment. (E) Average monthly incidence of injury by mechanism. (F) Number of injuries/year by position played. Box-and-whisker plots in B, C, and F: the dot indicates the median and the box indicates the interquartile range (IQR).