The food environment and dietary intake: Demonstrating a method for GIS-mapping and policy-relevant research

Sean C. Lucan, Nandita Mitra

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Aims: The aims of this paper are (1) to assess if perceptions of the food environment are associated with select dietary intake by neighborhood, and (2) to map neighborhoodspecific findings, demonstrating a method for policyrelevant research. Methods: Using pre-collected data from a Philadelphia, PA community health survey, we aggregated individual-level data (n=4,434 respondents) to neighborhoods (n=381 census tracts), adjusting for conceptually-relevant sociodemographic factors. We estimated Spearman correlations between multivariable adjusted food-environment perceptions (perceived produce availability, supermarket accessibility, grocery quality) and select dietary intake (reported fruit-and-vegetable and fast-food consumption), and mapped variables by neighborhood using geographic information systems (GIS). Results: Difficulty finding fruits and vegetables, having to travel outside of one's neighborhood to get to a supermarket, and poor grocery quality were each directly correlated with fast-food intake (rho=0.21, 0.34, 0.64 respectively; p values <0.001); and inversely correlated with fruit-and-vegetable intake (rho=-0.35, -0.54, -0.56 respectively; p values <0.001). Maps identified neighborhoods within the city with the worst food-environment perceptions and poorest dietary intakes. Conclusion: Negative perceptions of the food environment were strongly correlated with less-healthy eating in neighborhoods. Maps showed the geographic areas of greatest concern. Our findings demonstrate a method that might be used prospectively in public health for policy planning (e.g. to identify neighborhoods most in need), or retrospectively for policy assessment (e.g. to identify changes in neighborhoods after policy implementation).

Original languageEnglish (US)
Pages (from-to)375-385
Number of pages11
JournalJournal of Public Health (Germany)
Volume20
Issue number4
DOIs
StatePublished - Aug 1 2012

Keywords

  • Fast food
  • Food environment
  • Fruits and vegetables
  • Geographic information systems (GIS) mapping
  • Neighborhoods
  • Policy research
  • Public health

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

Fingerprint Dive into the research topics of 'The food environment and dietary intake: Demonstrating a method for GIS-mapping and policy-relevant research'. Together they form a unique fingerprint.

  • Cite this