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. 2018 Jul 5;20(7):e227. doi: 10.2196/jmir.9113

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©Aurélie Affret, Douae El Fatouhi, Courtney Dow, Emmanuelle Correia, Marie-Christine Boutron-Ruault, Guy Fagherazzi. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 05.07.2018.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on http://www.jmir.org/, as well as this copyright and license information must be included.

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Bland-Altman plots related to sodium. Difference in the daily intake of energy-adjusted sodium derived from the three to six 24-hour recalls and the short food frequency e-questionnaire (SFFeQ2) plotted against the corresponding mean energy-adjusted daily intakes derived from the two methods. Solid lines represent mean difference, and dashed lines show lower and upper 95% limits of agreement (mean, SD 1.96; n=92).