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The DHT used in this study was designed using human-centered design steps and included behavior change techniques, as previously outlined in detail by Johnston et al [16]. Briefly, the system was designed to comprise a cross-platform (i OS or Android) mobile app capable of linking to a consumer activity tracker and smart scales, specifically, the Fitbit Charge 4 and Aria Air smart scales (information also available in [17]).
JMIR Form Res 2024;8:e52442
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A video demonstrating the mobile app can be viewed in the Johnston study [39].
Screenshots from the mobile app detailing the main menu, advice section, symptom report, other vital sign tracker, medication tracker, and weight tracker screens.
All 9 participants completed the 2-week trial period, semistructured interviews, and evaluation questionnaires. Table 1 presents the demographic characteristics of the participants recruited during this phase of the research.
JMIR Form Res 2022;6(5):e34257
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