The impact of WIC food package changes on access to healthful food in 2 low-income urban neighborhoods.

OBJECTIVE: To evaluate the impact of the 2009 food package changes for the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) on the availability of healthful food.
DESIGN: Survey of all food stores in the study area before and after the changes were implemented.
SETTING: Two low-income neighborhoods in Philadelphia, 1 predominantly African-American, the other predominantly Hispanic. PARTICIPANTS: One hundred forty one supermarkets, grocery stores, and non-chain corner stores identified through field enumeration. MAIN OUTCOME MEASURES: Nutrition Environment Measure Survey for Stores (NEMS-S) to determine availability, price, and quality of fruit, vegetables, milk, cereal, beans, canned fish, meat, whole grains, and juice. ANALYSIS: Comparison of NEMS-S scores before and after food package changes using t tests and ordinary least squares regression to understand the role of supermarket status, WIC participation, and racial and income composition in predicting NEMS-S scores; geographic information systems to calculate proximity of residents to food stores.
RESULTS: The availability of healthful food increased significantly in stores, overall, with more substantial increases in WIC-authorized stores. Supermarket status, WIC retail status, and NEMS-S scores at baseline were significant predictors of NEMS-S scores after the food package changes. CONCLUSIONS AND IMPLICATIONS: Changes in the WIC food package were associated with increased availability of healthful food in 2 low-income neighborhoods.