BACKGROUND
While recent decades have seen gradual convergence in ethno-racial disparities in completed fertility in the United States, differences in the age pattern of first births remain. The role of nativity has not been fully understood.

OBJECTIVE
This paper examines how first births vary by nativity, and how this variation contributes to more significant racial and ethnic differentials.

METHODS
Using data from the National Survey of Family Growth (1997–2017), we jointly estimate the correlates of the timing of first births and childlessness. We assess differences between immigrants and US-born and child-migrant women across ethno-racial groups.

RESULTS
The unique first-birth patterns among foreign-born women have a notable impact on Hispanics, reducing differences from Whites in the average age at first birth and contributing to more significant differentials in childlessness. The impact of immigrant women on White and Black first births is more modest in scope.



中文翻译：

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美国第一胎的出生率差异：种族和民族模式（Andrés F. Castro Torres，Emilio Alberto Parrado）

背景
虽然近几十年来美国完全生育率的种族-种族差异逐渐趋同，但第一胎年龄模式的差异仍然存在。耶稣诞生的作用还没有被完全理解。

目标
本文研究了第一胎出生率如何因出生而异，以及这种差异如何导致更显着的种族和民族差异。

方法
我们使用全国家庭成长调查（1997-2017 年）的数据，共同估计首次生育时间与无子女时间的相关性。我们评估跨民族种族群体的移民与美国出生和儿童移民妇女之间的差异。

结果
外国出生妇女独特的第一胎模式对西班牙裔产生了显着影响，减少了与白人在第一胎平均年龄方面的差异，并导致更显着的无子女差异。移民妇女对白人和黑人第一次生育的影响范围较小。