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. 2017 Sep 20;8:42. doi: 10.1186/s13326-017-0151-z

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© The Author(s). 2017

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. 14 — Results of usability evaluation obtained from our questionnaire. This figure shows the final outcome of the survey carried out in cooperation with RC staff. For this survey, the six-item Likert scale-based System Usability (SUS) questionnaire was used. In order to numerically analyze the survey results, the Likert scale responses were translated to numbers using the following five-point scale: 1 = strongly disagree; 2 = disagree, 3 = neutral; 4 = agree; 5 = strongly agree. Based on the questionnaire outcome, average values (AVG) and standard deviation values (STD) were calculated and graphically presented