Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 560053
Title Validity of absolute intake and nutrient density of protein, potassium, and sodium assessed by various dietary assessment methods: An exploratory study
Author(s) Trijsburg, Laura; Geelen, Anouk; Hulshof, Paul J.M.; Van’T Veer, Pieter; Boshuizen, Hendriek C.; Hollman, Peter C.H.; Dijk, Gertjan van; Feskens, Edith J.M.; Vries, Jeanne H.M. de
Source Nutrients 12 (2020)1. - ISSN 2072-6643
DOI https://doi.org/10.3390/nu12010109
Department(s) Human Nutrition & Health
VLAG
Nutrition and Disease
Nutritional Biology and Health
Global Nutrition
Publication type Refereed Article in a scientific journal
Publication year 2020
Keyword(s) Dietary assessment - Doubly labeled water - Measurement errors - Multivariate models - Nutrient density - Validation
Abstract

It is suggested that nutrient densities are less affected by measurement errors than absolute intake estimates of dietary exposure. We compared the validity of absolute intakes and densities of protein (kJ from protein/total energy (kJ)), potassium, and sodium (potassium or sodium (in mg)/total energy (kJ)) assessed by different dietary assessment methods. For 69 Dutch subjects, two duplicate portions (DPs), five to fifteen 24-h dietary recalls (24 hRs, telephone-based and web-based) and two food frequency questionnaires (FFQs) were collected and compared to duplicate urinary biomarkers and one or two doubly labelled water measurements. Multivariate measurement error models were used to estimate validity coefficients (VCs) and attenuation factors (AFs). This research showed that group bias diminished for protein and sodium densities assessed by all methods as compared to the respective absolute intakes, but not for those of potassium. However, the VCs and AFs for the nutrient densities did not improve compared to absolute intakes for all four methods; except for the AF of sodium density (0.71) or the FFQ which was better than that of the absolute sodium intake (0.51). Thus, using nutrient densities rather than absolute intakes does not necessarily improve the performance of the DP, FFQ, or 24 hR.

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