Herman DR, et al. Effect of a targeted subsidy on intake of fruits and vegetables among low-income women in the Special Supplemental Nutrition Program for Women, Infants, and Children. Am J Public Health. Jan 2008;98(1):98-105.
In this study, the authors tested the effectiveness of a subsidy for fruits and vegetables on the WIC Program. Women who enrolled for postpartum services (n = 602) at three WIC sites in Los Angeles were assigned to either an intervention (farmers market or supermarket, both with redeemable food vouchers) or a control condition (a minimal non-food incentive). Results indicated that intervention participants increased their consumption of fruits and vegetables and sustained the increase 6 months after the intervention was terminated.