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. 2015 Jun 4;14:56. doi: 10.1186/s12937-015-0044-x

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© Zhang et al. 2015

This article is published under license to BioMed Central Ltd. 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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Fig. 2 — Bland–Altman plot showing agreement between the average of food frequency questionnaires (FFQs) and the three 24-h recalls (24HRs) in estimating the intakes of (a) energy, (b) calcium, (c) vegetables and (d) milk & milk products. (SD - standard deviation)