title: [Cost and energy density of diet in Brazil, 2008-2009].
abstract: This study aimed to evaluate the relationship between the cost and energy density of diet consumed in Brazilian households. Data from the Brazilian Household Budget Survey (POF 2008/2009) were used to identify the main foods and their prices. Similar items were grouped, resulting in a basket of 67 products. Linear programming was applied for the composition of isoenergetic baskets, minimizing the deviation from the average household diet. Restrictions were imposed on the inclusion of items and the energy contribution of the various food groups. A reduction in average cost of diet was applied at intervals of R$0.15 to the lowest possible cost. We identified an inverse association between energy density and cost of diet (p < 0.05), and at the lowest possible cost we obtained the maximum value of energy density. Restrictions on the diet's cost resulted in the selection of diets with higher energy density, indicating that cost of diet may lead to the adoption of inadequate diets in Brazil.
authors.affiliation: Faculdade de Saúde Pública, Universidade de São Paulo, São Paulo, Brasil. camila.ricardo@usp.br
authors.forename: Camila Zancheta
authors.initials: CZ
authors.lastname: Ricardo
authors.forename: Rafael Moreira
authors.initials: RM
authors.lastname: Claro
mesh_terms: D001938:Brazil; D004034:Diet Surveys / Q000191:economics* / Q000639:trends; D002149:Energy Intake; D005247:Feeding Behavior; D005502:Food / Q000191:economics*; D006801:Humans