Document Detail

Reproducibility of a short food frequency questionnaire for Japanese general population.
MedLine Citation:
PMID:  17545697     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: In epidemiologic field studies, a food frequency questionnaire (FFQ) is one of the most feasible tools to assess usual dietary habits. The purpose of this study is to evaluate the reproducibility of consumption of foods and nutrients assessed with a self-administered short FFQ in a Japanese general population. METHODS: We have investigated 1-year interval reproducibility of a self-administered short FFQ, comprising 47 food items, and 8 frequency categories, among 1,918 subjects (844 males and 1,074 females) who participated in health check-up programs in Central Japan. RESULTS: Intakes of energy and 24 nutrients along with 15 food groups estimated using the first questionnaire (FFQ1) were approximately equal to those using the second (FFQ2). Spearman's rank correlation coefficients (CCs) between intakes of nutrients quantified with FFQ1 and FFQ2 in males were distributed as 0.74 - 0.66- 0.55 (maximum - median - minimum), and intraclass CCs (ICCs) as 0.85 - 0.78 - 0.67. Among females, Spearman's rank CCs were distributed as 0.73 - 0.62 - 0.54, and ICCs as 0.84 - 0.77 - 0.69. Percentages of exact agreement, exact agreement plus agreement within adjacent categories and disagreement according to quintile categorization were 43%, 80%, and 1%, for males, and 42%, 79%, and 1% for females. Reproducibility figures were higher for the elderly than for young people in both sexes. CONCLUSIONS: Our FFQ yielded substantially high reproducibility and it may be applicable for assessing consumption of foods/food groups and energy and selected nutrients for the middle-aged and elderly population in Japan.
Nahomi Imaeda; Chiho Goto; Yuko Tokudome; Kaoru Hirose; Kazuo Tajima; Shinkan Tokudome
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of epidemiology / Japan Epidemiological Association     Volume:  17     ISSN:  0917-5040     ISO Abbreviation:  J Epidemiol     Publication Date:  2007 May 
Date Detail:
Created Date:  2007-06-04     Completed Date:  2007-07-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9607688     Medline TA:  J Epidemiol     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  100-7     Citation Subset:  IM    
Department of Food Science and Nutrition, Faculty of Human Life and Environmental Sciences, Nagoya Women's University, Nagoya, Japan.
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MeSH Terms
Age Factors
Diet / statistics & numerical data*
Food / statistics & numerical data*
Middle Aged
Nutrition Surveys*
Reproducibility of Results
Sex Factors

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