| Reproducibility and Validity of Dietary Patterns Assessed by a Food Frequency Questionnaire Used in the 5-Year Follow-Up Survey of the Japan Public Health Center-Based Prospective Study. | |
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MedLine Citation:
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PMID: 22343330 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Background: Analysis of dietary pattern is increasingly popular in nutritional epidemiology. However, few studies have examined the validity and reproducibility of dietary patterns. We assessed the reproducibility and validity of dietary patterns identified by a food frequency questionnaire (FFQ) used in the 5-year follow-up survey of the Japan Public Health Center-Based Prospective Study (JPHC Study).Methods: The participants were a subsample (244 men and 254 women) from the JPHC Study. Principal component analysis was used to identify dietary patterns from 28- or 14-day dietary records and 2 FFQs. To assess reproducibility and validity, we calculated Spearman correlation coefficients between dietary pattern scores derived from FFQs separated by a 1-year interval, and between dietary pattern scores derived from dietary records and those derived from a FFQ completed after the dietary records were calculated, respectively.Results: We identified 3 Japanese dietary patterns from the dietary records and 2 FFQs: prudent, westernized, and traditional. Regarding reproducibility, Spearman correlation coefficients between the 2 FFQs ranged from 0.55 for the westernized Japanese pattern in men and the prudent Japanese pattern in women to 0.77 for the traditional Japanese pattern in men. Regarding validity, the corresponding values between dietary records and the FFQ ranged from 0.32 for the westernized Japanese pattern in men to 0.63 for the traditional Japanese pattern in women.Conclusions: Acceptable reproducibility and validity was shown by the 3 dietary patterns identified by principal component analysis based on the FFQ used in the 5-year follow-up survey of the JPHC Study. |
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Authors:
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Akiko Nanri; Taichi Shimazu; Junko Ishihara; Ribeka Takachi; Tetsuya Mizoue; Manami Inoue; Shoichiro Tsugane |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-2-18 |
Journal Detail:
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Title: Journal of epidemiology / Japan Epidemiological Association Volume: - ISSN: 1349-9092 ISO Abbreviation: - Publication Date: 2012 Feb |
Date Detail:
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Created Date: 2012-2-20 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9607688 Medline TA: J Epidemiol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Epidemiology and Prevention, International Clinical Research Center, National Center for Global Health and Medicine. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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