The feasibility of a dietary survey tool is crucial for successful nutritional assessment via a community survey and for nutritional epidemiology. In 2012, we identified a newly developed computerized dietary survey system, the Diet Evaluation System (DES), which could be successfully applied to a community survey delivered during home visits using notebook computers when the internet environment was adequate, using either a WiBro modem or a smartphone as a tethered modem. In 2013, we retested DES feasibility using various mobile devices and in a larger number of subjects. We conducted a total of 430 interviews, representing two for each of 215 subjects of various ages, using tablet personal computers (PCs) and laptops. In addition, a group discussion with the interviewers was conducted. The interview success rate was improved to 84% (compared to 67% in 2012). Completing each interview took 14 min 1 s, and data processing was conducted automatically. The subjects' age, gender, and the type of mobile device used influenced the DES interview time. This study implies that the DES is an effective one-stop dietary survey system for use in a local setting. The interviewers' group discussion revealed that a one-stop system using the DES is convenient and that DES optimization for tablet PCs and continued database updating is needed.
饮食调查工具的易操作性是成功进行社区营养评估和了解营养状况至关重要的 因素。2012 年，我们确认了新开发的计算机饮食调查系统（DES）的实用性， 无论是使用无线宽带调制解调器还是使用智能手机连接调制解调器连接网络， 只要网络畅通，此系统均可成功地用笔记本电脑进行社区内家庭式访问。2013 年，我们在各种移动设备上对大批人群重新测试了DES 的可行性。我们使用平 板电脑和笔记本电脑，共调查了430 位受访者，分两组，每组215 人，分别涵 盖各个年龄段。此外，还进行了访问者的小组讨论。访问的成功率提高了84% （与2012 年的67%相比）。完成一次访问需14 分1 秒，访问同时系统自动对 数据进行处理。影响DES 访问时间有受访者的年龄、性别以及使用何种移动设 备上网。此研究表明，DES 是一项足不出户就可进行饮食调查的有效工具。受 访的小组讨论表明，DES 的一站式调查是非常方便有效的。此外，DES 在平板 电脑上的优化以及数据库的持续升级也是极为必要的。.