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City size and household food consumption: demand elasticities in Spain

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Are food price elasticities different across city sizes? The aim of this article is to estimate expenditure and own-price elasticities for 10 aggregated food product groups using the Spanish Household Budget Survey for the year 2010. These products are the ones for which the survey provides information regarding prices and quantities, thus allowing the application of an Almost Ideal Demand System (AIDS) model with censored data. The estimation procedure allows not only  comparisons to be made among households with different levels of income, but also the contribution of residence characteristics to variations in demand. The results confirm that the size of the city in which the household resides has a similar significant and relevant effect on consumption patterns as family income level. This is especially clear with own-price elasticities. In Spain, large central cities show a greater response to price changes than smaller cities or rural peripheral areas.

Keywords: Almost Ideal Demand System (AIDS); D12; R12; R22; Spain and municipality size; censored data; food elasticities

Document Type: Research Article


Affiliations: 1: REGIOlab – Regional Economics Laboratory, University of Oviedo, Oviedo, Spain 2: Department of Economics, Universidad Catolica del Norte, Antofagasta, 1270709, Chile

Publication date: May 13, 2014

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