Fresh produce consumption and the association between frequency of food shopping, car access, and distance to supermarkets

摘要

Background Fresh fruit and vegetables are important components of a healthy diet. Distance to a supermarket has been associated with the ability to access fresh produce. Methods A randomly sampled telephone survey was conducted with the main shopper for 3000 households in New Orleans, Louisiana in 2011. Individuals were asked where and how often they shopped for groceries, frequency of consumption of a variety of foods, and whether they had access to a car. Bivariate models assessed the relationship between four outcomes: car access, distance to the store patronized by the respondent, number of monthly shopping trips, and daily servings of produce. Structural equation modeling (SEM) was used to distinguish direct and indirect effects. Results In bivariate models, car access was positively associated with number of shopping trips and produce consumption while distance was inversely associated with shopping trips. In SEM models, produce consumption was not associated with car access or distance, but to the number of monthly shopping trips. Conclusion The frequency of shopping is associated with car access but a further distance deters it. Access to stores closer to the shopper may promote more frequent shopping and consumption of produce. Highlights ? This city-wide data set used distances calculated from the stores where people reported shopping. ? Fresh fruit and vegetable consumption was mediated by the frequency of shopping trips per month. ? Distance to the patronized store was not directly associated with consumption of produce. ? Automobile access allowed consumers to shop more frequently but distance deterred it.