Development and Validation of a Photographic Method to Use for Dietary Assessment in School Settings.
To develop and validate a photographic method aimed at making assessment of dietary intake in school canteens non-obstrusive, practical and feasible.The study was conducted in two elementary schools representing two different school canteen systems; main dish being served by canteen staff (Iceland),...
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ftdoajarticles:oai:doaj.org/article:8a7e7d310fe74f7788bbec38c1953677 2023-05-15T16:47:18+02:00 Development and Validation of a Photographic Method to Use for Dietary Assessment in School Settings. Anna S Olafsdottir Agneta Hörnell Marlene Hedelin Maria Waling Ingibjörg Gunnarsdottir Cecilia Olsson 2016-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0163970 https://doaj.org/article/8a7e7d310fe74f7788bbec38c1953677 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC5053534?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0163970 https://doaj.org/article/8a7e7d310fe74f7788bbec38c1953677 PLoS ONE, Vol 11, Iss 10, p e0163970 (2016) Medicine R Science Q article 2016 ftdoajarticles https://doi.org/10.1371/journal.pone.0163970 2022-12-30T22:50:19Z To develop and validate a photographic method aimed at making assessment of dietary intake in school canteens non-obstrusive, practical and feasible.The study was conducted in two elementary schools representing two different school canteen systems; main dish being served by canteen staff (Iceland), and complete self-serving (Sweden). Food items in serving and leftovers were weighed and photographed. Trained researchers estimated weights of food items by viewing the photographs and comparing them with pictures of half and full reference portions with known weights. Plates of servings and leftovers from 48 children during five school days (n = 448 plates) and a total of 5967 food items were estimated. The researchers' estimates were then compared with the true weight of the foods and the energy content calculated.Weighed and estimated amounts correlated across meals both in grams and as total energy (0.853-0.977, p<0.001). The agreement between estimated energy content in school meals was close to the true measurement from weighed records; on average 4-19 kcal below true values. Organisation of meal service impacted the efficacy of the method as seen in the difference between countries; with Iceland (served by canteen staff) having higher rate of acceptable estimates than Sweden (self-serving), being 95% vs 73% for total amount (g) in serving. Iceland more often had serving size between or above the half and full reference plates compared with Sweden.The photographic method provides acceptable estimates of food and energy intake in school canteens. However, greater accuracy can be expected when foods are served by canteen staff compared with self-serving. Article in Journal/Newspaper Iceland Directory of Open Access Journals: DOAJ Articles PLOS ONE 11 10 e0163970 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Medicine R Science Q |
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Medicine R Science Q Anna S Olafsdottir Agneta Hörnell Marlene Hedelin Maria Waling Ingibjörg Gunnarsdottir Cecilia Olsson Development and Validation of a Photographic Method to Use for Dietary Assessment in School Settings. |
topic_facet |
Medicine R Science Q |
description |
To develop and validate a photographic method aimed at making assessment of dietary intake in school canteens non-obstrusive, practical and feasible.The study was conducted in two elementary schools representing two different school canteen systems; main dish being served by canteen staff (Iceland), and complete self-serving (Sweden). Food items in serving and leftovers were weighed and photographed. Trained researchers estimated weights of food items by viewing the photographs and comparing them with pictures of half and full reference portions with known weights. Plates of servings and leftovers from 48 children during five school days (n = 448 plates) and a total of 5967 food items were estimated. The researchers' estimates were then compared with the true weight of the foods and the energy content calculated.Weighed and estimated amounts correlated across meals both in grams and as total energy (0.853-0.977, p<0.001). The agreement between estimated energy content in school meals was close to the true measurement from weighed records; on average 4-19 kcal below true values. Organisation of meal service impacted the efficacy of the method as seen in the difference between countries; with Iceland (served by canteen staff) having higher rate of acceptable estimates than Sweden (self-serving), being 95% vs 73% for total amount (g) in serving. Iceland more often had serving size between or above the half and full reference plates compared with Sweden.The photographic method provides acceptable estimates of food and energy intake in school canteens. However, greater accuracy can be expected when foods are served by canteen staff compared with self-serving. |
format |
Article in Journal/Newspaper |
author |
Anna S Olafsdottir Agneta Hörnell Marlene Hedelin Maria Waling Ingibjörg Gunnarsdottir Cecilia Olsson |
author_facet |
Anna S Olafsdottir Agneta Hörnell Marlene Hedelin Maria Waling Ingibjörg Gunnarsdottir Cecilia Olsson |
author_sort |
Anna S Olafsdottir |
title |
Development and Validation of a Photographic Method to Use for Dietary Assessment in School Settings. |
title_short |
Development and Validation of a Photographic Method to Use for Dietary Assessment in School Settings. |
title_full |
Development and Validation of a Photographic Method to Use for Dietary Assessment in School Settings. |
title_fullStr |
Development and Validation of a Photographic Method to Use for Dietary Assessment in School Settings. |
title_full_unstemmed |
Development and Validation of a Photographic Method to Use for Dietary Assessment in School Settings. |
title_sort |
development and validation of a photographic method to use for dietary assessment in school settings. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2016 |
url |
https://doi.org/10.1371/journal.pone.0163970 https://doaj.org/article/8a7e7d310fe74f7788bbec38c1953677 |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
PLoS ONE, Vol 11, Iss 10, p e0163970 (2016) |
op_relation |
http://europepmc.org/articles/PMC5053534?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0163970 https://doaj.org/article/8a7e7d310fe74f7788bbec38c1953677 |
op_doi |
https://doi.org/10.1371/journal.pone.0163970 |
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PLOS ONE |
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11 |
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10 |
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e0163970 |
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