%0期刊文章%@ 2292-9495 %I JMIR出版物%V 9% 卡塔尔世界杯8强波胆分析N 2% P e34704% T基于web的健康应用程序，将营养疗法转化为初级保健中的心血管风险降低(PortfolioDiet.app):质量改进和可用性测试研究%卡文纳,梅根·E % Chiavaroli,劳拉%格伦,安德里亚·J %他,吉纳维芙%资助,山南地区M % Chow,陈志明% Josse,罗伯特·G % Malik Vasanti S %华生,威廉%铁头球杆,艾莎%福尔摩斯,坎迪斯% Rackal,茱莉亚% Srichaikul,克里斯蒂% Sherifali,戴安娜% Snelgrove-Clarke,厄纳% udel,雅各%尤尼,彼得%一个展位,吉莉安L % Farkouh, Michael E %莱特,劳伦斯%肯德尔,西里尔W C %詹金斯,大卫J % Sievenpiper,约翰L % +多伦多大学Temerty医学院营养科学系，多伦多国王学院圈1号医学科学大楼5楼5334室，ON, M5S 1A8，加拿大，1 416 867 3732,john.sievenpiper@utoronto.ca %K组合饮食%K膳食组合%K营养疗法%K膳食应用%K eHealth %K可用性测试%K质量改进%K手机%D 2022 %7 21.4.2022 %9原始论文%J JMIR Hum Factors %G英文%X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管理血脂异常，预防心血管疾病。为了将PortfolioDiet转化为初级保健，我们开发了PortfolioDiet。应用程序作为病人和医生的教育和参与pc和智能手机的工具。PortfolioDiet。App目前被用作初级保健中预防心血管疾病的标准护理(常规护理)的附加疗法。为了加强该工具的采用，重要的是确保PortfolioDiet。App满足了目标终端用户的需求。目的:这个项目的主要目标是进行用户测试，以告知对PortfolioDiet的修改。app作为持续参与质量改进(QI)的一部分。 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. %M 35451981 %R 10.2196/34704 %U https://humanfactors.www.mybigtv.com/2022/2/e34704 %U https://doi.org/10.2196/34704 %U http://www.ncbi.nlm.nih.gov/pubmed/35451981