The roles of food prices and food access in determining food purchases of low-income households |
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| Affiliation: | 1. Economic Research Service, U.S. Department of Agriculture, Washington, DC 20024-3221, USA;2. Center for Health Economics, University of York, Heslington, York YO10 5DD, UK;3. STY Health Econometrics, Knoxville, TN 37931, USA;1. Universidad de Castilla-La Mancha, Spain;2. Universidad de Valencia, Spain;3. Universidad de La Laguna, Spain;4. Universidad de Alcalá, Spain;1. Department of Geography, University of Cincinnati, PO Box 210131, Cincinnati, OH 45221-0131, USA;2. Department of Geography, University of Georgia, 210 Field St., Rm. 204, Athens, GA 30602, USA;1. Friedman School of Nutrition Science and Policy, Tufts University, USA;2. International Comparison Program, Development Data Group, the World Bank, USA;3. Food Prices for Nutrition Project, Boston, USA;4. Department of Economics, Tufts University, USA;1. Medical Research Council Lifecourse Epidemiology Unit (University of Southampton), Southampton General Hospital Tremona Road, Southampton SO16 6YD, England, UK;2. Geography and Environment University of Southampton, University Road, Southampton SO17 1BJ, England, UK;1. Department of Family Medicine and Community Health, Philadelphia, Pennsylvania;2. Department of Biostatistics and Epidemiology, Perelman School of Medicine, Philadelphia, Pennsylvania;3. Department of City and Regional Planning, School of Design, Philadelphia, Pennsylvania;4. School of Nursing, University of Pennsylvania, Philadelphia, Pennsylvania;5. The Food Trust, Philadelphia, Pennsylvania |
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| Abstract: | A growing literature suggests that limited access to full-service grocery stores may be linked to poor diets, obesity, and other diet-related diseases. Food prices are likely to be as much of a factor in low-income consumers’ food purchase decisions as food store access is, but few studies consider the roles of prices and food access simultaneously. We incorporate supermarket access into a utility-theoretic censored demand system for 13 food groups among households that receive the Supplemental Nutrition Assistance Program (SNAP) benefits in the U.S. The demand system is estimated with a Bayesian procedure which otherwise would have been cumbersome with the classical approach. Results suggest that prices are significant determinants of food purchases, but supermarket access has limited influence. Improving food choices, diet, and health may require addressing both accessibility and affordability. |
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| Keywords: | Food access Censoring Demand system National Food Stamp Program Survey |
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