정현주1, 이상은2, 김동우2, 노화영2, 송수진2, 강민지2, 송윤주3, 백희영2

1서울대학교 생활과학대학 생활과학연구소, 2서울대학교 생활과학대학 식품영양학과, 3가톨릭대학교 생활과학부 식품영양학 전공

Background: Repeated 24 hour recall has been considered as a preferred method for obtaining accurate dietary
information while time and cost for coding and data processing have been a major barrier for their use in large
studies. This burden can be resolved by automating the interview and data processing. However, there has been
no report about a computerized interview system for dietary survey in a free-living population in Korea.
Methods: This study attempts to test the feasibility of a newly-developed web-based dietary assessment program,
Diet Evaluation System (DES) for subjects in a mixed region of urban and rural areas via wireless
internet. We conducted total of 134 interviews, twice for each of 67 subjects of various age. As another aspect
of feasibility, the group discussion among interviewers was done.
Results: Success rate of total attempted interviews was about 70%. Major reasons for problem with DES were
instability of wireless internet and consequent inefficient booting of laptops in some areas. It took 14 minute 56
seconds on average to complete an interview and data processing conducted automatically. Subjects’ age and
internet environment influenced the DES interview time. The group discussion revealed that one-stop system
with DES is fast and convenient assuming good wireless internet environment.
Conclusions: Web-based dietary assessment was feasible in this community nutrition survey. To confirm the
feasibility in large scale, studies with more comprehensive area and subjects are needed with various wireless
condition.

Korean J Health Promot 2013;13(3):107-115

Keywords: Diet survey, Computer program, Feasibility study, Automatic data processing