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Co-construction and Evaluation of a Prevention Program for Improving the Nutritional Quality of Food Purchases at No Additional Cost in a Socioeconomically Disadvantaged Population

Background: Food prices influence food choices. Purchasing foods with higher nutritional quality for their price may help improve the diet quality of socioeconomically disadvantaged individuals. Objective: This study aimed to describe the co-construction and evaluation of the Opticourses prevention...

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Autores principales: Perignon, Marlène, Dubois, Christophe, Gazan, Rozenn, Maillot, Matthieu, Muller, Laurent, Ruffieux, Bernard, Gaigi, Hind, Darmon, Nicole
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5998781/
https://www.ncbi.nlm.nih.gov/pubmed/29955680
http://dx.doi.org/10.3945/cdn.117.001107
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author Perignon, Marlène
Dubois, Christophe
Gazan, Rozenn
Maillot, Matthieu
Muller, Laurent
Ruffieux, Bernard
Gaigi, Hind
Darmon, Nicole
author_facet Perignon, Marlène
Dubois, Christophe
Gazan, Rozenn
Maillot, Matthieu
Muller, Laurent
Ruffieux, Bernard
Gaigi, Hind
Darmon, Nicole
author_sort Perignon, Marlène
collection PubMed
description Background: Food prices influence food choices. Purchasing foods with higher nutritional quality for their price may help improve the diet quality of socioeconomically disadvantaged individuals. Objective: This study aimed to describe the co-construction and evaluation of the Opticourses prevention program, which promotes healthy eating among participants in socioeconomically deprived situations by improving the nutritional quality of their household food purchases with no additional cost. Methods: Individuals were recruited in poor districts of Marseille, France. The intervention and evaluation tools and protocols were co-constructed with 96 individuals. Then, 93 adults willing to participate in a standardized intervention comprising 5 participative workshops on diet and budget were enrolled. Impact on food purchases was estimated with experimental economics: 2-d experimental food purchase intents were observed at baseline and endline for workshop participants (WPs, n = 35) and controls (n = 23), with the use of monetary incentives to limit social-desirability bias. Changes in food and nutrient content and energy cost (expressed in €/2000 kcal) of experimental purchases were assessed. Results: The co-constructed participative workshops included playful activities around food purchase practices and the nutritional quality, taste, and price of foods. Experimental purchases contained a large amount of energy at baseline for both WPs and controls (5114 and 4523 kcal ⋅ d(−1) ⋅ person(−1), respectively). For WPs only, the mean energy content decreased between baseline and endline (−1729 kcal ⋅ d(−1) ⋅ person(−1); P < 0.01; medium effect size: Cohen's d = 0.5), and the percentage of energy from free sugars and from foods high in fat, sugar, and salt also decreased (both P < 0.05 and medium effect sizes), whereas energy cost remained unchanged. No significant changes between baseline and endline were observed for the controls. Conclusions: After the intervention, the energy content of participants' experimental purchases was closer to their needs, suggesting that the workshops helped them plan and rationalize their food purchases better. The nutritional quality of the experimental purchases increased but energy cost did not, showing that the co-constructed Opticourses prevention program can favorably change food purchasing behaviors of socioeconomically disadvantaged individuals with no additional cost. This trial was registered at clinicaltrials.gov as NCT02383875.
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spelling pubmed-59987812018-06-28 Co-construction and Evaluation of a Prevention Program for Improving the Nutritional Quality of Food Purchases at No Additional Cost in a Socioeconomically Disadvantaged Population Perignon, Marlène Dubois, Christophe Gazan, Rozenn Maillot, Matthieu Muller, Laurent Ruffieux, Bernard Gaigi, Hind Darmon, Nicole Curr Dev Nutr Original Research Background: Food prices influence food choices. Purchasing foods with higher nutritional quality for their price may help improve the diet quality of socioeconomically disadvantaged individuals. Objective: This study aimed to describe the co-construction and evaluation of the Opticourses prevention program, which promotes healthy eating among participants in socioeconomically deprived situations by improving the nutritional quality of their household food purchases with no additional cost. Methods: Individuals were recruited in poor districts of Marseille, France. The intervention and evaluation tools and protocols were co-constructed with 96 individuals. Then, 93 adults willing to participate in a standardized intervention comprising 5 participative workshops on diet and budget were enrolled. Impact on food purchases was estimated with experimental economics: 2-d experimental food purchase intents were observed at baseline and endline for workshop participants (WPs, n = 35) and controls (n = 23), with the use of monetary incentives to limit social-desirability bias. Changes in food and nutrient content and energy cost (expressed in €/2000 kcal) of experimental purchases were assessed. Results: The co-constructed participative workshops included playful activities around food purchase practices and the nutritional quality, taste, and price of foods. Experimental purchases contained a large amount of energy at baseline for both WPs and controls (5114 and 4523 kcal ⋅ d(−1) ⋅ person(−1), respectively). For WPs only, the mean energy content decreased between baseline and endline (−1729 kcal ⋅ d(−1) ⋅ person(−1); P < 0.01; medium effect size: Cohen's d = 0.5), and the percentage of energy from free sugars and from foods high in fat, sugar, and salt also decreased (both P < 0.05 and medium effect sizes), whereas energy cost remained unchanged. No significant changes between baseline and endline were observed for the controls. Conclusions: After the intervention, the energy content of participants' experimental purchases was closer to their needs, suggesting that the workshops helped them plan and rationalize their food purchases better. The nutritional quality of the experimental purchases increased but energy cost did not, showing that the co-constructed Opticourses prevention program can favorably change food purchasing behaviors of socioeconomically disadvantaged individuals with no additional cost. This trial was registered at clinicaltrials.gov as NCT02383875. Oxford University Press 2017-09-13 /pmc/articles/PMC5998781/ /pubmed/29955680 http://dx.doi.org/10.3945/cdn.117.001107 Text en Copyright © 2017, Perignon et al. http://creativecommons.org/licenses/by-nc/4.0/ This is an open access article distributed under the terms of the CCBY-NC License http://creativecommons.org/licenses/by-nc/4.0/, which permits noncommercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Perignon, Marlène
Dubois, Christophe
Gazan, Rozenn
Maillot, Matthieu
Muller, Laurent
Ruffieux, Bernard
Gaigi, Hind
Darmon, Nicole
Co-construction and Evaluation of a Prevention Program for Improving the Nutritional Quality of Food Purchases at No Additional Cost in a Socioeconomically Disadvantaged Population
title Co-construction and Evaluation of a Prevention Program for Improving the Nutritional Quality of Food Purchases at No Additional Cost in a Socioeconomically Disadvantaged Population
title_full Co-construction and Evaluation of a Prevention Program for Improving the Nutritional Quality of Food Purchases at No Additional Cost in a Socioeconomically Disadvantaged Population
title_fullStr Co-construction and Evaluation of a Prevention Program for Improving the Nutritional Quality of Food Purchases at No Additional Cost in a Socioeconomically Disadvantaged Population
title_full_unstemmed Co-construction and Evaluation of a Prevention Program for Improving the Nutritional Quality of Food Purchases at No Additional Cost in a Socioeconomically Disadvantaged Population
title_short Co-construction and Evaluation of a Prevention Program for Improving the Nutritional Quality of Food Purchases at No Additional Cost in a Socioeconomically Disadvantaged Population
title_sort co-construction and evaluation of a prevention program for improving the nutritional quality of food purchases at no additional cost in a socioeconomically disadvantaged population
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5998781/
https://www.ncbi.nlm.nih.gov/pubmed/29955680
http://dx.doi.org/10.3945/cdn.117.001107
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