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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. 3 — 7-point Likert scale responses on the usability of the FoodFlip© smartphone application. Usability was defined as the ‘quality of user interface’ which assesses the user satisfaction and user engagement with the app. Four statements were used in assessing the usability features of the app: a ‘the product search feature was easy to use’, b ‘I liked the barcode scanner feature (if you used this feature)’, c ‘the app was easy to use’ and d ‘the app was confusing’. 7-point Likert scale ratings corresponded to completely disagreed (1) to completely agree (7)