Do Cash Transfers Improve Birth Outcomes? Evidence from Matched Vital Statistics, and Program and Social Security Data
利用乌拉圭匹配的行政微观数据，研究发现对贫困孕妇的现金转移支付显著降低了低出生体重发生率，效果源于宫内生长加速而非孕期延长，提示改善孕期营养是关键机制。
There is limited empirical evidence on whether cash transfers to poor pregnant women improve children's birth outcomes and potentially help weaken the cycle of intergenerational poverty. Using a unique array of program and social security administrative micro-data matched to longitudinal vital statistics in Uruguay, we estimate that participation in a generous social assistance program led to a sizable reduction in the incidence of low birthweight. The effect is due to faster intrauterine growth rather than longer gestational length. Our findings are consistent with improved maternal nutrition during pregnancy being a key driver of improved birthweight.