Journal
SPATIAL AND SPATIO-TEMPORAL EPIDEMIOLOGY
Volume 13, Issue -, Pages 31-40Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.sste.2015.04.004
Keywords
Neighborhood; Food environment; Perceptions; GIS; Food outlets
Categories
Funding
- National Cancer Institute [R21CA1 32133-02S1]
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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. (C) 2015 Elsevier Ltd. All rights reserved.
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