The US has higher infant mortality than peer countries. In this paper, we combine micro-data from the US with similar data from four European countries to investigate this US infant mortality disadvantage. The US disadvantage persists after adjusting for potential di erential reporting of births near the threshold of viability. While the importance of birth weight varies across comparison countries, relative to all comparison countries the US has similar neonatal (<1 month) mortality but higher postneonatal (1-12 months) mortality. We document similar patterns across Census divisions within the US. The postneonatal mortality disadvantage is driven by poor birth outcomes among lower socioeconomic status individuals.

中文翻译：

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为什么美国的婴儿死亡率高于欧洲？

美国的婴儿死亡率高于其他国家。在本文中，我们将美国的微观数据与四个欧洲国家的类似数据结合起来，调查美国婴儿死亡率的劣势。在对接近生存阈值的出生情况进行潜在差异报告调整后，美国的劣势仍然存在。虽然出生体重的重要性在各个比较国家之间有所不同，但相对于所有比较国家，美国的新生儿（<1 个月）死亡率相似，但新生儿后（1-12 个月）死亡率较高。我们记录了美国各人口普查部门的类似模式。新生儿后死亡率的劣势是由于社会经济地位较低的个体出生结果不佳造成的。