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Journal of Nutrition and Metabolism
Volume 2012 (2012), Article ID 932653, 8 pages
http://dx.doi.org/10.1155/2012/932653
Research Article

Food Store Environment Modifies Intervention Effect on Fruit and Vegetable Intake among Low-Income Women in North Carolina

1Department of Nutrition and Food Science, College of Agriculture, University of Kentucky, 206G Funkhouser, Lexington, KY 40506, USA
2Program for Research in Nutrition and Health Disparities, School of Rural Public Health, Texas A&M Health Science Center, College Station, TX, USA
3The Department of Nutrition, Gillings School of Global Public Health and Center for Health Promotion and Disease Prevention, University of North Carolina, Chapel Hill, NC 27599, USA
4School of Medicine and Center for Health and Promotion, University of California San Francisco, San Francisco, CA 94143, USA
5Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA

Received 15 June 2011; Revised 26 September 2011; Accepted 29 November 2011

Academic Editor: Maria Luz Fernandez

Copyright © 2012 Alison A. Gustafson et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background. The aim of the study is to determine how the food store environment modifies the effects of an intervention on diet among low-income women. Study Design. A 16-week face-to-face behavioral weight loss intervention was delivered among low income midlife women. Methods. The retail food environment for all women was characterized by (1) the number and type of food stores within census tracts; (2) availability of healthy foods in stores where participants shop; (3) an aggregate score of self-reported availability of healthy foods in neighborhood and food stores. Statistical Analyses. Multivariable linear regression was used to model the food store environment as an effect modifier between the intervention effect of fruit and vegetable serving change. Results. Among intervention participants with a low perception of availability of healthy foods in stores, the intervention effect on fruit and vegetable serving change was greater [1.89, 95% CI (0.48, 3.31)] compared to controls. Among intervention participants residing in neighborhoods with few super markets, the intervention effect on fruit and vegetable serving change was greater [1.62, 95% CI (1.27, 1.96)] compared to controls. Conclusion. Results point to how the food store environment may modify the success of an intervention on diet change among low-income women.