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. 2020 Feb 12;17:22. doi: 10.1186/s12966-020-0923-1

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© The Author(s). 2020

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 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. 4 — 7-point Likert scale responses on the functionality of the FoodFlip© smartphone application. Functionality was defined as the operability of app according to its purpose or design and in this study, measures the user-evaluated reliability of the nutritional information and comparisons of products. Four statements were used in assessing the functionality of the app: a ‘the app provided me with information I can use’, b ‘the app was believable’, c ‘the app helped me in understand the nutrient levels’, and d ‘the app helped me compare the healthiness between similar products’. 7-point Likert scale ratings corresponded to completely disagreed (1) to completely agree (7)