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- Title
Obesity and Supermarket Access: Proximity or Price?
- Authors
Drewnowski, Adam; Aggarwal, Anju; Hurvitz, Philip M.; Monsivais, Pablo; Moudon, Anne V.
- Abstract
Objectives. We examined whether physical proximity to supermarkets or supermarket price was more strongly associated with obesity risk. Methods. The Seattle Obesity Study (SOS) collected and geocoded data on home addresses and food shopping destinations for a representative sample of adult residents of King County, Washington. Supermarkets were stratified into 3 price levels based on average cost of the market basket. Sociodemographic and health data were obtained from a telephone survey. Modified Poisson regression was used to test the associations between obesity and supermarket variables. Results. Only 1 in 7 respondents reported shopping at the nearest supermarket. The risk of obesity was not associated with street network distances between home and the nearest supermarket or the supermarket that SOS participants reported as their primary food source. The type of supermarket, by price, was found to be inversely and significantly associated with obesity rates, even after adjusting for individual-level sociodemographic and lifestyle variables, and proximity measures (adjusted relative risk = 0.34; 95% confidence interval = 0.19, 0.63) Conclusions. Improving physical access to supermarkets may be one strategy to deal with the obesity epidemic; improving economic access to healthy foods is another.
- Subjects
WASHINGTON (State); NATURAL foods; OBESITY risk factors; SURVEYS; CLUSTER analysis (Statistics); CONFIDENCE intervals; STATISTICAL correlation; FOOD service; GEOGRAPHIC information systems; POISSON distribution; POPULATION geography; RESEARCH funding; USER charges; RESIDENTIAL patterns; SOCIOECONOMIC factors; RELATIVE medical risk; STATISTICAL models; DESCRIPTIVE statistics; ECONOMICS
- Publication
American Journal of Public Health, 2012, Vol 102, Issue 8, pe74
- ISSN
0090-0036
- Publication type
Article
- DOI
10.2105/AJPH.2012.300660