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. 2015 Apr 10;15:355. doi: 10.1186/s12889-015-1635-3

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© Moraeus et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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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Inclusion process of cross sectional surveys in 2008, 2010 and 2013 and longitudinal study in 2008 and 2010. Number of children eligible, measured and with completed family questionnaires. ¹Reasons for exclusion in 2008: 90 parent refusals, 82 sick/absent, 19 child refusals, 2 miscellaneous. ²Reasons for exclusion in grade 1–2 2010: 140 parent refusals, 85 sick/absent, 16 child refusal, 10 miscellaneous. ³Reasons for exclusion in 2013: 57 parent refusals, 119 sick/absent, 16 child refusals, 5 miscellaneous.