An offline mobile nutrition monitoring intervention for varying-literacy patients receiving hemodialysis: a pilot study examining usage and usability
An offline mobile nutrition monitoring intervention for varying-literacy patients receiving hemodialysis: a pilot study examining usage and usability
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DOI：
10.1136/amiajnl-2011-000732
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发表时间：
2012-09-01
影响因子：
6.4
通讯作者：
Welch, Janet L.
中科院分区：
文献类型：
--
作者：
Connelly, Kay;Siek, Katie A.;Welch, Janet L.
目的设计和评价膳食摄入监测应用程序（DIMA），以帮助不同文化程度的血液透析患者坚持其规定的饮食方案。方法采用班杜拉社会认知理论的迭代，以用户为中心的设计过程，设计DIMA-一个移动的应用程序，利用触摸屏，视觉界面，条形码扫描，电子邮件，电子邮件和电话。和语音记录，以帮助不同文化程度的接受血液透析的患者自我监测他们的饮食。进行了一项初步现场研究，其中从两家透析机构面对面招募了18名接受血液透析的患者，使用DIMA 6周。受试者使用DIMA记录他们的饮食摄入量，每周与研究助理会面三次。记录与DIMA的所有交互。在整个研究期间记录受试者的透析间期体重增加。在研究结束时，两个面对面的问卷调查进行管理，以评估可用性和上下文use.Results科目能够成功地使用DIMA-12个科目使用DIMA一样多或更多的研究结束时，他们在开始时，并报告说，DIMA帮助他们改变他们的饮食。受试者难以使用条形码扫描仪。查看过去的饭菜是最常用的反射机制DIMA.结论结果表明，虽然许多设计功能是有用的，有些可以改进。特别是，未来版本的DIMA将在智能手机上使用摄像头进行条形码扫描，将反馈和过去的膳食反映集成到应用程序的正常流程中，并在选择食物时支持视觉提示。
Objective Design and evaluation of the dietary intake monitoring application (DIMA) to assist varying-literacy patients receiving hemodialysis to adhere to their prescribed dietary regimen.Methods An iterative, user-centered design process informed by Bandura's social cognitive theory was employed to design DIMA-a mobile application that utilizes touch-screen, visual interfaces; barcode scanning; and voice recording to assist varying-literacy patients receiving hemodialysis to self-monitor their diet. A pilot field study was conducted where 18 patients receiving hemodialysis were recruited face-to-face from two dialysis facilities to use DIMA for 6 weeks. Subjects recorded their dietary intake using DIMA and met with research assistants three times each week. All interactions with DIMA were logged. Subjects' interdialytic weight gain was recorded throughout the study. At the end of the study, two face-to-face questionnaires were administered to assess usability and context of use.Results Subjects were able to use DIMA successfully-12 subjects used DIMA as much or more at the end of the study as they did at the beginning and reported that DIMA helped them change their diet. Subjects had difficulty using the barcode scanner. Viewing past meals was the most used of the reflection mechanisms in DIMA.Conclusion Results suggest that while many design features were useful, some could be improved. In particular, future versions of DIMA will be on a smartphone using a camera for barcode scanning, integrate feedback and past meal reflection into the normal flow of the application, and support visual cues when selecting food items.