Perinatal Mortality Data
Perinatal Mortality Data from the National Vital Statistics System of the National Center for Health Statistics combine microdata from the Linked Birth/Infant Death Data Set Period Data and the Fetal Death Data Set. Perinatal deaths refer to a combination of fetal deaths of at least 20 weeks gestation and neonatal deaths (under 28 days old). Because a relatively large number of deaths occur in the period immediately before and after delivery, this combined data set is useful in studying reproductive loss.
Other birth data available are Natality Data, 1968-1985 & 1991-1995, 1998-2001, Birth Cohort Linked Birth/Infant Death Data, 1983-1991, 1995-1998, and Matched Multiple Birth Data, 1995-1997.
CDC Wonder is a data extraction tool that can produce tables with counts of births occuring for select recent years within the United States to U.S. residents and non-residents. Counts can be obtained by state, county, child's gender and weight, maternal race, maternal age, maternal education, gestation period, prenatal care, and birth plurality.
Microdata for the United States and its Territories are included on separate files. The data for each set of the Perinatal Mortality Data Set consist of three separate data files. The denominator file contains the live birth file. The numerator file includes perinatal deaths which could be linked to a live birth. The death data data in both the numerator and unlinked files include the deaths to infants less than one year of age who died in the same calendar year as the birth data, regardless of the calendar year of their birth. The unlinked file contains information from the death certificate for all perinatal deaths which could not be linked to a corresponding birth certificates. The variable OUTCOME can be used to distinguish between infant deaths and fetal deaths.
Demographic data include variables such as age and educational attainment of parents, marital status, live-birth order, race, sex, and geographic area. Health data include items such as birth weight, gestation, prenatal care, attendant at birth, and complications of labor and delivery. Geographic data includes state, county, and city of mother's residence and state and county of the place of birth. City and county data are available only for areas with a population of 250,000 or more.
SEER provides helpful U.S. Population data for 1969 on.
".zip" files can be unzipped with compression software like winzip, 7z, WinRAR and the like. To check ability to uncompress these files, download the small files compress.Z or compress.zip. These files give an example of how to read in .Z and .zip ASCII files into SAS for UNIX without decompressing the files.
To download files in Internet Explorer, right click on them and select "Save Target As...". Get the latest Acrobat Reader at www.abobe.com.
File size: The compressed denominator files are between 100 and 105 Mb. The numerator files are about 4 Mb. The compression ratio for these files is over 90%. NBER internal users can access the data from a UNIX shell at /homes/data/perinatal or on an NBER PC via Network Neighborhood --> NBER --> home --> data --> perinatal
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