Full Citation
Title: Do people really know what food retailers exist in their neighborhood? Examining GIS-based and perceived presence of retail food outlets in an eight-county region of South Carolina
Citation Type: Journal Article
Publication Year: 2015
ISBN:
ISSN: 18775853
DOI: 10.1016/j.sste.2015.04.004
NSFID:
PMCID:
PMID: 26046635
Abstract: Measures of neighborhood food environments have been linked to diet and obesity. However, the appropriate measurement methods and how people actually perceive their food environments are still unclear. In a cross-sectional study of 939 adults, the perceived presence of food outlets was compared to the geographic-based presence of outlets within a participant's neighborhood, utilizing percent agreement and Kappa statistics. Perceived presence was based on survey-administered questions, and geographic-based presence was characterized using 1-, 2-, 3- and 5-mile (1-mile. =. 1.6. km) Euclidean- and network-based buffers centered on each participant's residence. Analyses were also stratified by urban and non-urban designations. Overall, an individual's perceived neighborhood food environment was moderately correlated with the geographic-based presence of outlets. The performance of an individual's perception was most optimal using a 2- or 3-mile geographic-based neighborhood boundary and/or when the participant lived in a non-urban neighborhood. This study has implications for how researchers measure the food environment.
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Authors: Barnes, Timothy L.; Bell, Bethany A.; Freedman, Darcy A.; Colabianchi, Natalie; Liese, Angela D.
Periodical (Full): Spatial and Spatio-temporal Epidemiology
Issue:
Volume: 13
Pages: 31-40
Countries: