Jiang M, et al. The effect of WIC on breastfeeding: a new look at an established relationship. Child Youth Serv Rev. Feb 2010;32(2):264-273.
The study aimed to use propensity scores and fixed-effects estimation data from the Panel Study of Income Dynamics—Child Development Supplement to determine the effect of WIC on breastfeeding initiation and duration. Results indicated that the negative association between WIC and breastfeeding is likely false, arising from the poor sociodemographic profile of participants.