NCHS - Births and General Fertility Rates: United States
收藏DataCite Commons2026-01-11 更新2026-05-03 收录
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https://www.datalumos.org/datalumos/project/243401/version/V1/view
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资源简介：
This dataset includes crude birth rates and general fertility rates in the United States since 1909.
The number of states in the reporting area differ historically. In 1915 (when the birth registration area was established), 10 states and the District of Columbia reported births; by 1933, 48 states and the District of Columbia were reporting births, with the last two states, Alaska and Hawaii, added to the registration area in 1959 and 1960, when these regions gained statehood. Reporting area information is detailed in references 1 and 2 below. Trend lines for 1909–1958 are based on live births adjusted for under-registration; beginning with 1959, trend lines are based on registered live births.
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提供机构：
ICPSR - Interuniversity Consortium for Political and Social Research
创建时间：
2026-01-11
