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. 2024 Apr 30;26:e53442. doi: 10.2196/53442

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©Hege Berg Henriksen, Markus Dines Knudsen, Anette Hjartåker, Rune Blomhoff, Monica Hauger Carlsen. Originally published in the Journal of Medical Internet Research (https://www.jmir.org), 30.04.2024.

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 https://www.jmir.org/, as well as this copyright and license information must be included.

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Bland-Altman plots depicting the mean differences (DIGIKOST–WR) for intake of food groups in grams per day: (A) fruits and berries including juice (LoA: –265 to 323), (B) vegetables (LoA: –201 to 329), (C) unsalted nuts (LoA: –18 to 30), (D) whole grains (LoA: –48 to 133), (E) fish (LoA: –68 to 117), (F) fatty fish (LoA: –48 to 71), (G) red meat (LoA: –118 to 94), and (H) processed meat (–96 to 83). The solid line represents the mean, and the dashed lines represent the LoA equal to 1.96 SDs of the observations. FFQ: food frequency questionnaire; LoA: limits of agreement; WR: weighed food dairy.