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. SOURCES NCHS, National Vital Statistics System, birth data (see https://www.cdc.gov/nchs/births.htm); public-use data files (see https://www.cdc.gov/nchs/data_access/VitalStatsOnline.htm); and CDC WONDER (see http://wonder.cdc.gov/). REFERENCES National Office of Vital Statistics. Vital Statistics of the United States, 1950, Volume I. 1954. Available from: https://www.cdc.gov/nchs/data/vsus/vsus_1950_1.pdf. Hetzel AM. U.S. vital statistics system: major activities and developments, 1950-95. National Center for Health Statistics. 1997. Available from: https://www.cdc.gov/nchs/data/misc/usvss.pdf. National Center for Health Statistics. Vital Statistics of the United States, 1967, Volume I–Natality. 1969. Available from: https://www.cdc.gov/nchs/data/vsus/nat67_1.pdf. Martin JA, Hamilton BE, Osterman MJK, et al. Births: Final data for 2015. National vital statistics reports; vol 66 no 1. Hyattsville, MD: National Center for Health Statistics. 2017. Available from: https://www.cdc.gov/nchs/data/nvsr/nvsr66/nvsr66_01.pdf. Martin JA, Hamilton BE, Osterman MJK, Driscoll AK, Drake P. Births: Final data for 2016. National Vital Statistics Reports; vol 67 no 1. Hyattsville, MD: National Center for Health Statistics. 2018. Available from: https://www.cdc.gov/nvsr/nvsr67/nvsr67_01.pdf. Martin JA, Hamilton BE, Osterman MJK, Driscoll AK, Births: Final data for 2018. National vital statistics reports; vol 68 no 13. Hyattsville, MD: National Center for Health Statistics. 2019. Available from: https://www.cdc.gov/nchs/data/nvsr/nvsr68/nvsr68_13.pdf.

The data (name, year of birth, sex, and number) are from a 100 percent sample of Social Security card applications for 1880 onward.

The share of preterm births in the United States peaked in 2006 at 12.8 percent of all births. In 2022, 10.38 percent of all births in the United States were preterm births. This statistic depicts the percentage of births that were preterm births in the United States from 1990 to 2022.

This is the metadata for a clinical dataset entitled the The ARTERIAL US Study (A pReTERm Infants’ cArdiovascular deveLopment: An Ultrasound Study). We collected cardiovascular ultrasound data on the geometry, heart size, blood vessel diameters) and function (Doppler flow waveforms) of term and preterm hearts and vasculature. Study design: The ARTERIAL US Study is a single-centre prospective observational cohort study. Study synopsis Participants: 1. Term group: babies born at or after 37+0 weeks gestation 2. Late preterm group: babies born at or after 34+0 and before 37+0 weeks gestation Primary Outcome(s): Haemodynamic status as computed by the computational model of the neonatal cardiovascular system Sample Size: 15 term and 10 late preterm Study Setting: Auckland City Hospital, Te Toka Tumai Auckland (formerly Auckland District Health Board) Eligibility criteria Inclusion criteria: Born at or after at or after 37+0 weeks gestation (term group) or born at or after 34+0 and before 37+0 weeks gestation (late preterm group), Parental consent Exclusion criteria: Known medical conditions or cardiovascular abnormalities. Data collection Methods: Babies will have an ultrasound examination within 48 hours of birth and again three to six weeks later weeks later (i.e., at term equivalent postmenstrual age). Data collection included clinical data collection (data from the medical records about the following clinical factors: antenatal admission to hospital, gestational diabetes mellitus, antenatal infection, placental:fetal weight ratio, exposure to antenatal corticosteroids and magnesium sulphate, risk factors and primary reason for preterm birth (including pre-eclampsia, chorioamnionitis and fetal growth restriction), age at scan, sex, gestational age at birth, birth weight and length, head circumference at birth, APGARs, delayed cord clamping, postnatal steroid administration), anthropometric measurements and ultrasound measurements. Data availability Data and associated documentation from participants who have consented to future re-use of their data are available to other users under the data sharing arrangements provided by the University of Auckland’s Human Health Research Services (HHRS) platform (https://research-hub.auckland.ac.nz/subhub/human-health-research-services-platform). The data dictionary and metadata are published on the here. Researchers are able to use this information and the provided contact address (dataservices@auckland.ac.nz) to request a de-identified dataset through the HHRS Data Access Committee. Data will be shared with researchers who provide a methodologically sound proposal and have appropriate ethical approval, where necessary, to achieve the research aims in the approved proposal. Data requestors are required to sign a Data Access Agreement that includes a commitment to using the data only for the specified proposal, not to attempt to identify any individual participant, a commitment to secure storage and use of the data, and to destroy or return the data after completion of the project. The HHRS platform reserves the right to charge a fee to cover the costs of making data available, if needed, for data requests that require additional work to prepare.