Exploring the distribution of food stores in British Columbia: associations with neighbourhood socio-demographic factors and urban form.

Several studies have identified disparities in access to food retailers among urban neighbourhoods with varied socio-demographic characteristics; but few studies have examined whether key zoning and siting mechanisms described in the urban planning literature explain differences in food store access. This study assessed associations between socio-demographic and urban planning variables with the availability of large supermarkets and stores selling fresh food within one kilometre buffers from residential addresses and the proximity to the closest food stores across 630 census tracts in British Columbia, Canada. Multivariate regression results indicated that neighbourhoods with higher median household income had significantly decreased access to food stores. Inclusion of urban planning factors in multivariate models, particularly housing and transportation considerations, explained much of the relation between area income and food store access, and were significant predictors of food store availability and proximity. Public health research and practice addressing food availability would benefit by incorporating theoretical perspectives from urban planning theory.