Relative Validity of the Eat and Track (EaT) Smartphone App for Collection of Dietary Intake Data in 18-to-30-Year Olds

Lyndal Wellard-Cole; Juliana Chen; Alyse Davies; Adele Wong; Sharon Huynh; Anna Rangan; Margaret Allman-Farinelli

doi:10.3390/nu11030621

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Relative Validity of the Eat and Track (EaT) Smartphone App for Collection of Dietary Intake Data in 18-to-30-Year Olds

Journal article

Open access

Peer reviewed

Relative Validity of the Eat and Track (EaT) Smartphone App for Collection of Dietary Intake Data in 18-to-30-Year Olds

Lyndal Wellard-Cole, Juliana Chen, Alyse Davies, Adele Wong, Sharon Huynh, Anna Rangan and Margaret Allman-Farinelli

Nutrients, Vol.11(3), pp.1-12

2019

DOI: https://doi.org/10.3390/nu11030621

PMID: 30875772

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Abstract

diet assessment

relative validity

smartphone

young adults

apps

(1) Background: Smartphone dietary assessment apps can be acceptable and valid data collection methods but have predominantly been validated in highly educated women, and none specifically measured eating-out habits in young adults. (2) Methods: Participants recorded their food and beverage consumption for three days using the Eat and Track (EaT) app, and intakes were compared with three dietitian-administered 24-h recall interviews matched to the same days as the reference method. Wilcoxon signed-rank or t-tests, correlation coefficients and Bland-Altman plots assessed agreement between the two methods for energy and percentage energy from nutrients (%E). (3) Results: One hundred and eighty nine of 216 participants (54% females, 60% resided in higher socioeconomic areas, 49% university-educated) completed the study. There were significant differences in median energy intake between methods (p < 0.001), but the EaT app had acceptable agreement for most nutrient densities at the group level. Correlation coefficients ranged from r = 0.56 (%E fat) to 0.82 (%E sugars), and between 85% and 94% of participants were cross-classified into the same or adjacent quartiles. Bland-Altman plots showed wide limits of agreement but no obvious biases for nutrient densities except carbohydrate in males. (4) Conclusions: The EaT app can be used to assess group nutrient densities in a general population of 18-to-30-year olds.

Details

Title: Relative Validity of the Eat and Track (EaT) Smartphone App for Collection of Dietary Intake Data in 18-to-30-Year Olds
Authors: Lyndal Wellard-Cole (Corresponding Author) - The University of Sydney
Juliana Chen - The University of Sydney
Alyse Davies - The University of Sydney
Adele Wong - The University of Sydney
Sharon Huynh - The University of Sydney
Anna Rangan - The University of Sydney
Margaret Allman-Farinelli - The University of Sydney
Publication details: Nutrients, Vol.11(3), pp.1-12
Publisher: MDPI AG
Date published: 2019
DOI: 10.3390/nu11030621
ISSN: 2072-6643
PMID: 30875772
Copyright note: © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Grants: Quantifying intake of food prepared outside home during emerging adulthood, LP150100831, Australian Research Council (Australia, Canberra) - ARC
Organisation Unit: School of Health - Nutrition & Dietetics
Language: English
Record Identifier: 991104337002621
Output Type: Journal article

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