@Article{作者信息:doi / 10.2196/34704 = " Kavanagh,梅根·E和Chiavaroli劳拉和格伦,安德里亚·J和他吉纳维芙和格兰特,山南地区M和周润发,陈志明Josse,罗伯特·G和马利克Vasanti年代和沃森,威廉和铁头球杆,阿以莎和福尔摩斯,坎迪斯和Rackal,茱莉亚和Srichaikul,克里斯蒂和Sherifali,戴安娜和Snelgrove-Clarke厄纳尤戴尔,雅各和尤尼,彼得和展台,吉莉安L和Farkouh,迈克尔•E和莱特劳伦斯和肯德尔,西里尔W C和詹金斯,David J A和Sievenpiper, John L”，标题=“基于web的健康应用程序转化营养疗法降低心血管风险在初级保健(PortfolioDiet.app):质量改进和可用性测试研究”，期刊=“JMIR Hum Factors”，年=“2022”，月=“Apr”，日=“21”，卷=“9”，数=“2”，页=“e34704”，关键词=“组合饮食;膳食组合;营养治疗;饮食应用程序;电子健康;可用性测试;质量改进;背景:组合饮食，或膳食组合，是一种治疗性饮食模式，结合降低胆固醇的食物来控制血脂异常，以预防心血管疾病。为了将PortfolioDiet转化为初级保健，我们开发了PortfolioDiet。app as a patient and physician educational and engagement tool for PCs and smartphones. The PortfolioDiet.app is currently being used as an add-on therapy to the standard of care (usual care) for the prevention of cardiovascular disease in primary care. To enhance the adoption of this tool, it is important to ensure that the PortfolioDiet.app meets the needs of its target end users. Objective: The main objective of this project is to undertake user testing to inform modifications to the PortfolioDiet.app as part of ongoing engagement in quality improvement (QI). Methods: We undertook a 2-phase QI project from February 2021 to September 2021. We recruited users by convenience sampling. Users included patients, family physicians, and dietitians, as well as nutrition and medical students. For both phases, users were asked to use the PortfolioDiet.app daily for 7 days. In phase 1, a mixed-form questionnaire was administered to evaluate the users' perceived acceptability, knowledge acquisition, and engagement with the PortfolioDiet.app. The questionnaire collected both quantitative and qualitative data, including 2 open-ended questions. The responses were used to inform modifications to the PortfolioDiet.app. In phase 2, the System Usability Scale was used to assess the usability of the updated PortfolioDiet.app, with a score higher than 70 being considered acceptable. Results: A total of 30 and 19 users were recruited for phase 1 and phase 2, respectively. In phase 1, the PortfolioDiet.app increased users' perceived knowledge of the Portfolio Diet and influenced their perceived food choices. Limitations identified by users included challenges navigating to resources and profile settings, limited information on plant sterols, inaccuracies in points, timed-logout frustration, request for step-by-step pop-up windows, and request for a mobile app version; when looking at positive feedback, the recipe section was the most commonly praised feature. Between the project phases, 6 modifications were made to the PortfolioDiet.app to incorporate and address user feedback. At phase 2, the average System Usability Scale score was 85.39 (SD 11.47), with 100 being the best possible. Conclusions: By undertaking user testing of the PortfolioDiet.app, its limitations and strengths were able to be identified, informing modifications to the application, which resulted in a clinical tool that better meets users' needs. The PortfolioDiet.app educates users on the Portfolio Diet and is considered acceptable by users. Although further refinements to the PortfolioDiet.app will continue to be made before its evaluation in a clinical trial, the result of this QI project is an improved clinical tool. ", issn="2292-9495", doi="10.2196/34704", url="https://humanfactors.www.mybigtv.com/2022/2/e34704", url="https://doi.org/10.2196/34704", url="http://www.ncbi.nlm.nih.gov/pubmed/35451981" }