Currie Janet, Schwandt Hannes
professor of economics at Princeton University and NBER.
postdoctoral research associate at Princeton University's Woodrow Wilson School.
J Hum Resour. 2016 Fall;51(4):805-831. doi: 10.3368/jhr.51.4.0714-6533R. Epub 2015 Nov 30.
The events of 9/11 released a million tons of toxic dust into lower Manhattan, an unparalleled environmental disaster. It is puzzling then that the literature has shown little effect of fetal exposure to the dust. However, inference is complicated by pre-existing differences between the affected mothers and other NYC mothers as well as heterogeneity in effects on boys and girls. Using all births in utero on 9/11 in NYC and comparing them to their siblings, we show that residence in the affected area increased prematurity and low birth weight, especially for boys.
9·11事件向曼哈顿下城释放了100万吨有毒尘埃,这是一场前所未有的环境灾难。然而令人费解的是,文献显示胎儿接触这些尘埃几乎没有影响。不过,由于受影响母亲与纽约市其他母亲之间原本就存在差异,以及对男孩和女孩的影响存在异质性,所以推断变得复杂。我们利用纽约市9·11事件发生时所有子宫内的出生情况,并将其与他们的兄弟姐妹进行比较,结果表明居住在受影响地区会增加早产和低出生体重的几率,尤其是对男孩而言。