Validity and reproducibility of a food frequency questionnaire as a measure of recent dietary intake in young adults.

This research assessed the relative validity and reproducibility of the Dietary Questionnaire for Epidemiological Studies (DQESV2) over one month in young adults, given the lack of concise and convenient instruments for assessing recent dietary intake in this population. Participants were recruited...

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Autores principales:	Lana Hebden, Engracia Kostan, Fiona O'Leary, Allison Hodge, Margaret Allman-Farinelli
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/791c1b08683f497eb510a82516ac1c7c
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spelling	oai:doaj.org-article:791c1b08683f497eb510a82516ac1c7c2021-11-18T08:54:41ZValidity and reproducibility of a food frequency questionnaire as a measure of recent dietary intake in young adults.1932-620310.1371/journal.pone.0075156https://doaj.org/article/791c1b08683f497eb510a82516ac1c7c2013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24058660/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203This research assessed the relative validity and reproducibility of the Dietary Questionnaire for Epidemiological Studies (DQESV2) over one month in young adults, given the lack of concise and convenient instruments for assessing recent dietary intake in this population. Participants were recruited from a large Australian university (N = 102; 35% male; age 18-34 years; body mass index 16-37 kg/m(2)). Five one-day weighed food records (WFR) were administered over one month followed by the DQESV2. Estimates for nutrients (energy, protein, total fat, saturated fat, carbohydrate, sugars, dietary fibre, and alcohol) and fruit and vegetable servings were compared between methods using correlation coefficients, 95% limits of agreement, and quintile classifications. One week later, a second DQESV2 was completed by n = 77 of the participants to assess reproducibility using intra-class correlations (ICC) and weighted kappa. Comparing methods, all nutrients and fruit and vegetable servings showed significant positive correlations (P<0.05) except protein intake in males; over 60% of participants were within one quintile classification except total fat and dietary fibre intakes in males (55% and 56%, respectively); and differences in nutrient and food intakes between methods were all within +/-20% of the mean WFR values except alcohol intake in females. Between first and second administrations of the DQESV2 all ICC coefficients were positive (P<0.01) and weighted kappa coefficients ranged from 0.54 for fruit servings (including fruit juice) in males to 0.91 for protein intake in females. Over a one month period, the DQESV2 demonstrated good reproducibility for the studied nutrients and for fruit and vegetable servings and provided a valid measure of the studied nutrients, except alcohol in females, and of fruit servings (including fruit juice) in both genders, at the group level in this young adult population.Lana HebdenEngracia KostanFiona O'LearyAllison HodgeMargaret Allman-FarinelliPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 9, p e75156 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lana Hebden Engracia Kostan Fiona O'Leary Allison Hodge Margaret Allman-Farinelli Validity and reproducibility of a food frequency questionnaire as a measure of recent dietary intake in young adults.
description	This research assessed the relative validity and reproducibility of the Dietary Questionnaire for Epidemiological Studies (DQESV2) over one month in young adults, given the lack of concise and convenient instruments for assessing recent dietary intake in this population. Participants were recruited from a large Australian university (N = 102; 35% male; age 18-34 years; body mass index 16-37 kg/m(2)). Five one-day weighed food records (WFR) were administered over one month followed by the DQESV2. Estimates for nutrients (energy, protein, total fat, saturated fat, carbohydrate, sugars, dietary fibre, and alcohol) and fruit and vegetable servings were compared between methods using correlation coefficients, 95% limits of agreement, and quintile classifications. One week later, a second DQESV2 was completed by n = 77 of the participants to assess reproducibility using intra-class correlations (ICC) and weighted kappa. Comparing methods, all nutrients and fruit and vegetable servings showed significant positive correlations (P<0.05) except protein intake in males; over 60% of participants were within one quintile classification except total fat and dietary fibre intakes in males (55% and 56%, respectively); and differences in nutrient and food intakes between methods were all within +/-20% of the mean WFR values except alcohol intake in females. Between first and second administrations of the DQESV2 all ICC coefficients were positive (P<0.01) and weighted kappa coefficients ranged from 0.54 for fruit servings (including fruit juice) in males to 0.91 for protein intake in females. Over a one month period, the DQESV2 demonstrated good reproducibility for the studied nutrients and for fruit and vegetable servings and provided a valid measure of the studied nutrients, except alcohol in females, and of fruit servings (including fruit juice) in both genders, at the group level in this young adult population.
format	article
author	Lana Hebden Engracia Kostan Fiona O'Leary Allison Hodge Margaret Allman-Farinelli
author_facet	Lana Hebden Engracia Kostan Fiona O'Leary Allison Hodge Margaret Allman-Farinelli
author_sort	Lana Hebden
title	Validity and reproducibility of a food frequency questionnaire as a measure of recent dietary intake in young adults.
title_short	Validity and reproducibility of a food frequency questionnaire as a measure of recent dietary intake in young adults.
title_full	Validity and reproducibility of a food frequency questionnaire as a measure of recent dietary intake in young adults.
title_fullStr	Validity and reproducibility of a food frequency questionnaire as a measure of recent dietary intake in young adults.
title_full_unstemmed	Validity and reproducibility of a food frequency questionnaire as a measure of recent dietary intake in young adults.
title_sort	validity and reproducibility of a food frequency questionnaire as a measure of recent dietary intake in young adults.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/791c1b08683f497eb510a82516ac1c7c
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Validity and reproducibility of a food frequency questionnaire as a measure of recent dietary intake in young adults.

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