Qian, Yiwei; Nayga Jr., Rodolfo M.; Thomsen, Michael R.; … - Agricultural and Applied Economics Association - AAEA - 2013
. Using a panel data set, we combine matching methodology and difference-in-differences analysis to estimate the effect of the … different matching methods. With the use of a stricter matching method, the estimate of the FFVP effect is negative and … significant, indicating that the program reduces children’s body mass index. Less strict matching methods yield opposite results. …