We examine the effect of the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) on the quality of household food purchases using the National Household Food Acquisition and Purchase Survey (FoodAPS) and propensity score matching. A healthy purchasing index (HPI) is...

We comment on a recent important article by Akbay et al. and discuss some methodological and estimation issues arising from their paper. We then suggest alternative procedures that may help improve their estimates and thereby enhance their usefulness as a basis for food policy and marketing...