Figlio D, et al. Does prenatal WIC participation improve birth outcomes? New evidence from Florida. J Public Econ. Feb 2009;93(1/2):235-245.
Using data sets from Florida about all births between 1997 and2001, the authors analyzed the effects of prenatal nutrition and education services provided by WIC on birth outcomes. Based on their results, WIC participation had no effect on mean birthweight and gestational age, but substantially reduced the likelihood of adverse birth outcomes, including birthweights below 2,500 grams.