In the developed world, the historic process of fertility decline was interrupted by an unexpected period of increasing fertility called the baby boom. Recent studies suggest that a similar trend change in fertility may have occurred in many less developed nations at approximately the same time. Using cohort fertility data for 26 less developed countries from around the world taken from the Integrated Public Use Microdata Series, International (IPUMS-I), this paper aims to ascertain the extent to which these trend changes occurred in a large sample of countries around the world. It offers convincing proof of the existence of an upward shift in fertility among cohorts born during the 1930s, which was common to many countries in the less developed world. Despite many similarities with the baby boom, there are also differences stemming, mostly, from its timing with respect to the demographic transition.

中文翻译：

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从全球视角重新审视 20 世纪中叶的生育率变化。

在发达国家，生育率下降的历史进程被一个意外的生育率上升时期称为婴儿潮。最近的研究表明，许多欠发达国家可能几乎同时发生了类似的生育率变化趋势。本文使用来自国际综合公共使用微数据系列 (IPUMS-I) 的全球 26 个欠发达国家的队列生育率数据，旨在确定这些趋势变化在全球范围内的大量样本中发生的程度。世界。它提供了令人信服的证据，证明 1930 年代出生的人群的生育率存在上升趋势，这在欠发达国家的许多国家中很常见。尽管与婴儿潮有许多相似之处，但也存在差异，主要是，