Reproducibility of a food frequency questionnaire: Korea Nurses' Health Study
- 주제(키워드) Food frequency questionnaire , Korea Nurses' Health Study , Reproducibility
- 등재 SCIE, SCOPUS, KCI등재
- 발행기관 The Korean Society of Community Nutrition
- 발행년도 2022
- URI http://www.dcollection.net/handler/ewha/000000203517
- 본문언어 영어
- Published As https://doi.org/10.4162/nrp.2022.16.1.106
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
BACKGROUND/OBJECTIVES: This study aimed to examine the reproducibility of food frequency questionnaires (FFQs) designed for young female nurses in the Korea Nurses' Health Study. SUBJECTS/METHODS: The reproducibility of web-based, self-administered FFQs was evaluated among 243 Korean female nurses. The first FFQ (FFQ1) was administered from March 2014 to February 2019 and the second FFQ (FFQ2) from November 2019, with a mean interval of 2.8 years between the FFQs (range, 9 months-5.6 years). Pearson and Spearman correlation coefficients (r values) and quartile agreements between FFQ1 and FFQ2 were calculated for intakes of energy, nutrients, and foods. RESULTS: Pearson correlation coefficients ranged from 0.41 to 0.55 (median r = 0.51) for energy and raw nutrients and from 0.16 to 0.46 (median r = 0.36) for energy-adjusted nutrients. Spearman correlation coefficients ranged from 0.25 to 0.72 (median r = 0.41) for food items. The percentages of women who were classified into the same or adjacent quartile were 77% to 84% (median = 82%) for raw nutrients and 69% to 86% (median = 78%) for foods. CONCLUSIONS: The results indicated that the web-based FFQ used in the Korea Nurses' Health Study has acceptable reproducibility.
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