TY -的盟Kavanagh梅根·E盟——Chiavaroli劳拉AU -格伦,安德里亚·J盟——他,吉纳维芙AU -格兰特,山南地区M盟——食物,陈志明AU - Josse,罗伯特·G AU - Malik Vasanti年代AU -沃森,威廉AU -铁头球杆,艾莎盟——福尔摩斯,坎迪斯AU - Rackal,茱莉亚盟——Srichaikul克里斯蒂盟——Sherifali戴安娜盟——Snelgrove-Clarke厄纳AU -尤戴尔,雅各布AU -尤尼,彼得AU -布斯,Gillian L AU - Farkouh迈克尔E AU -莱特,劳伦斯AU -肯德尔,西里尔W C AU -詹金斯,大卫J AU - Sievenpiper,约翰L PY - 2022 DA - 2022/4/21 TI -一个基于web的健康应用程序翻译营养治疗心血管风险减少初级保健(PortfolioDiet.app):质量改进和可用性测试研究乔- JMIR哼因素SP - e34704六世- 9 - 2 KW -组合饮食KW -膳食组合KW -营养疗法KW -膳食应用KW -电子健康KW -可用性测试KW -质量改进KW -手机AB -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。方法:我们在2021年2月至2021年9月进行了一个两阶段的QI项目。 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. SN - 2292-9495 UR - https://humanfactors.www.mybigtv.com/2022/2/e34704 UR - https://doi.org/10.2196/34704 UR - http://www.ncbi.nlm.nih.gov/pubmed/35451981 DO - 10.2196/34704 ID - info:doi/10.2196/34704 ER -