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Comparability of dietary patterns assessed by multiple dietary assessment methods: results from the 1946 British Cohort
journal contribution
posted on 2005-03-01, 00:00 authored by Sarah McNaughtonSarah McNaughton, G Mishra, G Bramwell, A Paul, M WadsworthObjective: The aim of this study is to evaluate the consistency of dietary patterns assessed through the use of a dietary recall and a 5-day food diary. Design: Participants (n=2265) of a longitudinal study of health and development completed 48-h dietary recall at interview, followed by a 5-day food diary and with the 24 h immediately preceding the interview analysed separately as a 24-h recall. Mean intakes of foods and nutrients were calculated and dietary patterns were assessed using exploratory factor analysis, using the method of principal components. Paired t-tests and correlation coefficients were used to compare the three dietary assessment methods. Results: Five distinct dietary patterns were identified using the food diary and the 48-h recall but were less consistent on the 24-h recall. Correlations between factor scores on the 48-h recall and the food diary (r=0.13–0.67) were higher than those between the 24-h recall and food diary (r=-0.01–0.59). The recall methods were effective at ranking subjects according to food and nutrient intakes, with the 48-h recall and food diary showing higher correlations in both males and females. Conclusions: This study indicates that a 48-h recall effectively characterises dietary patterns in British adults when compared to a food diary and ranks participants appropriately with respect to most nutrients and foods and is superior to a single 24-h recall. These results have implications for longitudinal studies where maximising response rates to repeat dietary assessment tools is essential.
History
Journal
European journal of clinical nutritionVolume
59Issue
3Pagination
341 - 352Publisher
John Libbey & Co.Location
London, EnglandPublisher DOI
ISSN
0954-3007eISSN
1476-5640Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2005, Nature Publishing GroupUsage metrics
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