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Nutrients
Volume 11
Issue 3
10.3390/nu11030501
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Article

Subjects’ Perception in Quantifying Printed and Digital Photos of Food Portions

by
Pryscila G. Nichelle
1,
Claudia C. B. Almeida
1,
Suzi A. Camey
2,
Lenine M. Garmus
1,
Vanessa C. M. Elias
1,
Dirce M. Marchioni
3,
Danielle G. da Silva
4,
Marga C. Ocke
5,
Nadia Slimani
6,
Regina M. Fisberg
7 and
Sandra P. Crispim
1,*
1
Postgraduate Program in Food and Nutrition, Department of Nutrition, Federal University of Paraná (UFPR), Curitiba 80240-110, Brazil
2
Postgraduate Program in Epidemiology, Department of Statistics, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre 91509-900, Brazil
3
Department of Nutrition, School of Public Health, University of São Paulo. Research Group of Epidemiological Studies and Innovation in Food and Health—GEIAS, São Paulo 01246-000, Brazil
4
Postgraduate Program in Nutrition Science, Department of Nutrition, Federal University of Sergipe, São Cristóvão 49100-000, Brazil
5
National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands
6
Nutrition and Metabolism Section, International Agency for Research on Cancer, 69372 Lyon, France
7
Department of Nutrition, School of Public Health, University of São Paulo, São Paulo 01246-000, Brazil
*
Author to whom correspondence should be addressed.
Nutrients 2019, 11(3), 501; https://doi.org/10.3390/nu11030501
Received: 22 January 2019 / Revised: 20 February 2019 / Accepted: 20 February 2019 / Published: 27 February 2019
(This article belongs to the Special Issue Dietary Assessment in Nutritional Epidemiology: Public Health Implications for Promoting Lifelong Health)
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Abstract

Although digital photos have the potential to improve the precision of reported portions in dietary assessment, there are few studies investigating its accuracy in comparison to printed photos. The aim of this study was to evaluate the perception of adults in quantifying food portion sizes using printed and digital photos, displayed on computer-screens and tablets. In total, 1165 evaluations were performed for 60 photos of portion sizes in Brazil. Each participant (n = 58) attended two sessions in the study center, with an interval of at least one week. In each session, twelve food portions were prepared and randomly evaluated by each participant in its printed and digital forms. The mean error (difference between the estimated and true portions) was not significantly different between the printed photos (2.1 g ± 47.2) and the digital ones (−6.4 g ± 53.7). The agreement on using the printed and digital photos was 91% and 90%, respectively. Furthermore, the use of the tablet was more prone to underestimation when compared to printed and computer-screen photos (p < 0.001). Overall, participants did not present major difficulties in perceiving the portion sizes using the printed and digital photos, but the use of tablets led to less accurate results, indicating that this needs to be further evaluated. View Full-Text
Keywords: food portion; photos; perception; quantification; dietary intake; adults food portion; photos; perception; quantification; dietary intake; adults
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MDPI and ACS Style

Nichelle, P.G.; Almeida, C.C.B.; Camey, S.A.; Garmus, L.M.; Elias, V.C.M.; Marchioni, D.M.; da Silva, D.G.; Ocke, M.C.; Slimani, N.; Fisberg, R.M.; Crispim, S.P. Subjects’ Perception in Quantifying Printed and Digital Photos of Food Portions. Nutrients 2019, 11, 501. https://doi.org/10.3390/nu11030501

AMA Style

Nichelle PG, Almeida CCB, Camey SA, Garmus LM, Elias VCM, Marchioni DM, da Silva DG, Ocke MC, Slimani N, Fisberg RM, Crispim SP. Subjects’ Perception in Quantifying Printed and Digital Photos of Food Portions. Nutrients. 2019; 11(3):501. https://doi.org/10.3390/nu11030501

Chicago/Turabian Style

Nichelle, Pryscila G., Claudia C. B. Almeida, Suzi A. Camey, Lenine M. Garmus, Vanessa C. M. Elias, Dirce M. Marchioni, Danielle G. da Silva, Marga C. Ocke, Nadia Slimani, Regina M. Fisberg, and Sandra P. Crispim. 2019. "Subjects’ Perception in Quantifying Printed and Digital Photos of Food Portions" Nutrients 11, no. 3: 501. https://doi.org/10.3390/nu11030501

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