Why Is Infant Mortality Higher in the United States than in Europe?
结合美国与四个欧洲国家的微观数据，研究发现美国婴儿死亡率劣势主要源于出生后1至12个月的死亡率较高，且集中在社会经济地位较低的群体。
The United States has higher infant mortality than peer countries. In this paper, we combine microdata from the United States with similar data from four European countries to investigate this US infant mortality disadvantage. The US disadvantage persists after adjusting for potential differential reporting of births near the threshold of viability. While the importance of birth weight varies across comparison countries, relative to all comparison countries the United States has similar neonatal (<1 month) mortality but higher postneonatal (1–12 months) mortality. We document similar patterns across census divisions within the United States. The postneonatal mortality disadvantage is driven by poor birth outcomes among lower socioeconomic status individuals.