Imaeda, Nahomi Shigakkan University|Nagoya City University
Goto, Chiho Nagoya City University|Nagoya Bunri University
Sasakabe, Tae Aichi Medical University|Nagoya University
Mikami, Haruo Chiba Cancer Center Research Institute
Oze, Isao Aichi Cancer Center Research Institute
Hosono, Akihiro Nagoya City University
Naito, Mariko Nagoya University|Hiroshima University
Miyagawa, Naoko Shiga University of Medical Science|National Institutes of Biomedical Innovation, Health and Nutrition
Ozaki, Etsuko Kyoto Prefectural University of Medicine
Ikezaki, Hiroaki Kyushu University
Nanri, Hinako National Institutes of Biomedical Innovation, Health and Nutrition
Nakahata, Noriko T. University of Shimane
Kamano, Sakurako K. Tokushima University Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Kuriki, Kiyonori Shizuoka University
Yaguchi, Yuri T. Yamagata University
Kayama, Takamasa Yamagata University
Kurihara, Ayako Keio University
Harada, Sei Keio University
Wakai, Kenji Nagoya University
Food frequency questionnaire
Purpose: The purpose of this study was to evaluate the reproducibility and validity of a short food frequency questionnaire (FFQ) for food group intake in Japan, the reproducibility and partial validity of which were previously confirmed for nutrients.
Methods: A total of 288 middle-aged healthy volunteers from 11 different areas of Japan provided nonconsecutive 3-day weighed dietary records (DRs) at 3-month intervals over four seasons. We evaluated reproducibility based on the first (FFQ1) and second (FFQ2) questionnaires and their validity against the DRs by comparing the intake of 20 food groups. Spearman’s rank correlation coefficients (SRs) were calculated between energy-adjusted intake from the FFQs and that from the DRs.
Results: The intake of 20 food groups estimated from the two FFQs was mostly equivalent. The median energy-adjusted SRs between the FFQ1 and FFQ2 were 0.61 (range 0.38–0.86) for men and 0.66 (0.45–0.84) for women. For validity, the median de-attenuated SRs between DRs and the FFQ1 were 0.51 (0.17–0.76) for men and 0.47 (0.23–0.77) for women. Compared with the DRs, the proportion of cross-classification into exact plus adjacent quintiles with the FFQ1 ranged from 58 to 86% in men and from 57 to 86% in women. According to the robust Z scores and the Bland–Altman plot graphs, the underestimation errors in the FFQ1 tended to be greater in individuals with high mean levels of consumption for meat for men and for other vegetables for both men and women.
Conclusion: The FFQ demonstrated high reproducibility and reasonable validity for food group intake. This questionnaire is short and remains appropriate for identifying associations between diet and health/disease among adults in Japan.
Environmental Health and Preventive Medicine
BioMed Central|Springer Nature|The Japanese Society for Hygiene
This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
|DOI (Published Version)|
|URL ( Publisher's Version )|
ehpm_26_28.pdf 638 KB