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KMID : 0123420140190030258
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Korean Journal of Community Nutrition
2014 Volume.19 No. 3 p.258 ~ p.273
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Development of a Questionnaire for Dietary Habit Survey of Korean Adults
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Cho Jin-Suk
Kim Ki-Nam
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Abstract
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Objectives: The purposes of the study were to develop a questionnaire for dietary habit survey for Korean adults, and unify the terms related to dietary habits.
Methods: The Delphi method by 43 professionals on dietary habit research was applied to unify the terms.
Results: With regard to results on terms related to dietary habit, the respondents recorded the highest percentage (90.7%) of selecting the term "dietary habits" and also the highest percentage (76.7%) of choosing "dietary habits" for English. The biggest percentage of the respondents chose "individual dietary behaviors repeatedly formed and habitualized under the social, cultural, and psychological influence in the group" as the concept of dietary habits. The Delphi survey for the development of a questionnaire resulted in the first questionnaire of 31 items, the second one of 27 items, and the third one of 25 items. The validity of questionnaire items was tested with content validity ratios (CVR). The items whose CVR value was 0.29 or lower were eliminated or revised, because the minimum CVR value needed to test validity was 0.29. To test the reliability of questionnaire items, test-retest method was performed in 163 adults. According to the Kappa coefficient in the range of 0.314-0.716, all of the 25 items were in the reliability scope. A survey was taken with 702 adults to finally revise and supplement the third questionnaire whose validity and reliability were tested.
Conclusions: Through those processes, a questionnaire for adults’ dietary habit survey was finally completed. The significance of the study lies in the development of the first questionnaire on dietary habits equipped with both validity and reliability in South Korea.
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KEYWORD
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dietary habit questionnaire, Delphi method, content validity, reliability
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