Korean Journal of Community Nutrition

Original Articles

[English]
Application and Evaluation of Web-based Food Frequency Questionnaire for Korean Adolescents: Jinhee Yum, Seungmin Lee; Korean J Community Nutr 2016;21(5):440-450. Published online October 31, 2016; DOI: https://doi.org/10.5720/kjcn.2016.21.5.440

Abstract PDF PubReader: OBJECTIVES
We previously developed a dish-based semi-quantitative food frequency questionnaire (FFQ) for Korean adolescents and reported that it had reasonable reliability and validity. The objective of the current study was to construct a web-based dietary evaluation system applying the FFQ for Korean adolescents and examine its applicability in the context of reliability and validity.
METHODS
A web-based food frequency questionnaire system was designed using a comprehensive approach, incorporating not only dietary data survey but also up-to-date nutrition information and individualized eating behavior guidelines. A convenience sample of 50 boys and girls aged 12~18 years agreed to participate in the study and completed the FFQ twice and 3 days of dietary recall on the developed website during a two-month period. The FFQâ€™s reliability and validity was examined using correlation and cross classification analysis. We also measured participantsâ€™ subjective levels of the web siteâ€™s usability, visual effect, understanding, and familiarity.
RESULTS
Spearman correlation coefficients for reliability ranged from 0.74 (for vitamin A) to 0.94 (for energy). From cross-classification analyses, the proportion of subjects in the same intake quartile was highest for energy (82.0%) and lowest for vitamin A (56.0%). With regard to validity analysis, Spearman correlation coefficients ranged from 0.34 (for fiber) to 0.79 (for energy). The proportions of subjects in the opposite categories between the first FFQ and 3-day diet recall data were generally low from 0.00% (for fat) to 36.2% (for sodium). Average subjective levels of the websiteâ€™s usability, visual effect, understanding, and familiarity were all found to be over 4 points out of 5 points.
CONCLUSIONS
The web-based dietary evaluation system developed can serve as a valid and attractive tool for administering FFQ to Korean adolescents.

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[English]
Evaluation of a Nutrition Education Website for Children: Sun Hee Kim, Taisun Hyun; Korean J Community Nutr 2006;11(2):218-228. Published online April 30, 2006

Abstract PDF: This study was carried out to evaluate the usefulness and the effectiveness of the nutrition education website 'ifood (http://ifood.or.kr)' for children. A total of 262 children (5th and 6th graders) participated in the self-education program using the website which consisted of 4 sessions every two weeks. In each session, they were asked to answer some questions on the comprehensiveness of each topic while navigating the website. Nutrition knowledge (20 items), dietary attitudes (7 items), and dietary behaviors (10 items) were evaluated using questionnaires before and after the education. After the education, the usefulness and readability of the website was also evaluated. Most (97.2%) of the responders reported that the education using this website was helpful, 97.3% thought that the contents were reliable, 90.1% responded that the contents were easy to understand, and 88.8% answered that they would revisit 'ifood'. The menus they liked best were "Interesting games" for 35.8%, "How can I cook?" for 17.8%, "How can I become slim" for 16.4%. This website might be more attractive by providing a "greater variety of contents in detail", "more music, motion pictures and images", "more interesting games". After the education, there was a significant increase in nutrition knowledge scores from 10.9 to 13.1. Although the total scores of dietary attitudes and dietary behaviors did not improve, there was a significant increase in each of some questions. These results showed that "ifood", a nutritional education website, was desirable in reliability, aesthetics and enjoyability, and was effective in improving nutrition knowledge and some of dietary attitudes and behaviors in children.

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[English]
Selecting Instructional Contents for Nutritional Education Program for Junior/Senior High School Students Through Instructional Analysis and Analysis of Entry Behaviors and Learner Characteristics: Yeo Hwa Kang, Il Sun Yang, Hye Young Kim, Hae Young Lee; Korean J Community Nutr 2004;9(4):464-471. Published online August 31, 2004

Abstract PDF: For the purpose of developing 'Web-Based Nutritional Education Program', this study did instructional analysis, analysis of entry behaviors and learner characteristics to select instructional contents for nutritional education program for junior/senior high school students. Survey questionnaires were distributed from October 21, 2002 to October 26, 2002 to a total of 564 junior/senior high school students in Seoul. The total number of questionnaires collected and used in our study was 479, which is 84.9% of the total questionnaires distributed. As a result of the curriculum analysis of 'Techonolgy-Home economics', subjects related with 'food and nutrition' in the 7th educational course study result, lessons including the contents of food and nutrition were 'nutrition and meal of adolescent' in 7th grade, 'family meal management' in 9th grade and 'practice of home life' in 10th grade. According to the curriculum analysis, 'nutrition' and 'food' were chosen for the superior subjects of nutrition education program and four subordinate subjects per superior one were developed. Then, entry behaviors and learner characteristics were analyzed: life characteristics, internet usage, anthropometrics data and nutritional knowledge. Students were interested in using computer and preferred passive activity to dynamic activity. According to the analysis of internet usage, WBI for students should composed active parts such as game, moving image, immediate reply and follow-up by e-mail, bulletin board and community activity. Students' BMI were in normal range but they were lacked nutritional knowledge. We wrote performance objectives that were specific behavior skills to be learned, the conditions under which they must be performed and the criteria for successful performance. The next step for developing the WBI nutrition education program would be based on the results mentioned above.

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