A national database of geographical information on retail food stores and eating places : development and application to epidemiologic research

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This study examined the association between food environment (based on store names and addresses) and nutrient intake (assessed by 24-hour urine collection) in a group of 1000 female students living in 300 municipalities. Neighborhood availability of confectionery stores/bakeries was inversely associated with urinary potassium, and was positively associated with the ratio of sodium to potassium. Neighborhood availability of rice stores showed an inverse association with urinary potassium, whereas neighborhood availability of supermarkets/grocery stores conversely showed a positive association with this variable. Further, neighborhood availability of fruit/vegetable stores showed an inverse association with the ratio of sodium to potassium.