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.
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.
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DOI：
10.1016/j.sste.2015.04.004
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发表时间：
2015-04
影响因子：
3.4
通讯作者：
Liese AD
中科院分区：
文献类型：
--
作者：
Barnes TL;Bell BA;Freedman DA;Colabianchi N;Liese AD
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.
