{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["009:20"], "contactPoint": {"@type": "vcard:Contact", "fn": "National Center for Health Statistics", "hasEmail": "mailto:births@cdc.gov"}, "describedBy": "https://www.cdc.gov/nchs/data_access/vitalstatsonline.htm", "description": "This data set contains estimated teen birth rates for age group 15\u201319 (expressed per 1,000 females aged 15\u201319) by county and year.\n\nDEFINITIONS\n\nEstimated teen birth rate: Model-based estimates of teen birth rates for age group 15\u201319 (expressed per 1,000 females aged 15\u201319) for a specific county and year. Estimated county teen birth rates were obtained using the methods described elsewhere (1,2,3,4). These annual county-level teen birth estimates \u201cborrow strength\u201d across counties and years to generate accurate estimates where data are sparse due to small population size (1,2,3,4). The inferential method uses information\u2014including the estimated teen birth rates from neighboring counties across years and the associated explanatory variables\u2014to provide a stable estimate of the county teen birth rate.\nMedian teen birth rate: The middle value of the estimated teen birth rates for the age group 15\u201319 for counties in a state.\nBayesian credible intervals: A range of values within which there is a 95% probability that the actual teen birth rate will fall, based on the observed teen births data and the model.\n\nNOTES\n\nData on the number of live births for women aged 15\u201319 years were extracted from the National Center for Health Statistics\u2019 (NCHS) National Vital Statistics System birth data files for 2003\u20132015 (5).\n\nPopulation estimates were extracted from the files containing intercensal and postcensal bridged-race population estimates provided by NCHS. For each year, the July population estimates were used, with the exception of the year of the decennial census, 2010, for which the April estimates were used.\n\nHierarchical Bayesian space\u2013time models were used to generate hierarchical Bayesian estimates of county teen birth rates for each year during 2003\u20132015 (1,2,3,4).\n\nThe Bayesian analogue of the frequentist confidence interval is defined as the Bayesian credible interval. A 100*(1-\u03b1)% Bayesian credible interval for an unknown parameter vector \u03b8 and observed data vector y is a subset C of parameter space \u0424 such that\n1-\u03b1\u2264P({C\u2502y})=\u222bp{\u03b8 \u2502y}d\u03b8,\nwhere integration is performed over the set  and is replaced by summation for discrete components of \u03b8.  The probability that \u03b8 lies in C given the observed data y is at least (1- \u03b1) (6).\n\nCounty borders in Alaska changed, and new counties were formed and others were merged, during 2003\u20132015. These changes were reflected in the population files but not in the natality files. For this reason, two counties in Alaska were collapsed so that the birth and population counts were comparable. Additionally, Kalawao County, a remote island county in Hawaii, recorded no births, and census estimates indicated a denominator of 0 (i.e., no females between the ages of 15 and 19 years residing in the county from 2003 through 2015). For this reason, Kalawao County was removed from the analysis. Also , Bedford City, Virginia, was added to Bedford County in 2015 and no longer appears in the mortality file in 2015. For consistency, Bedford City was merged with Bedford County, Virginia, for the entire 2003\u20132015 period. Final analysis was conducted on 3,137 counties for each year from 2003 through 2015. County boundaries are consistent with the vintage 2005\u20132007 bridged-race population file geographies (7).", "distribution": [{"@type": "dcat:Distribution", "downloadURL": "https://data.cdc.gov/api/v3/views/3h58-x6cd/export.csv?accessType=DOWNLOAD", "mediaType": "text/csv"}, {"@type": "dcat:Distribution", "downloadURL": "https://data.cdc.gov/api/v3/views/3h58-x6cd/export.xml?accessType=DOWNLOAD", "mediaType": "application/xml"}, {"@type": "dcat:Distribution", "downloadURL": "https://data.cdc.gov/api/v3/views/3h58-x6cd/query.json?accessType=DOWNLOAD", "mediaType": "application/json"}], "identifier": "https://data.cdc.gov/api/views/3h58-x6cd", "isPartOf": "NCHS - Teen Birth Rates for Age Group 15-19 in the United States by County", "issued": "2018-02-07", "keyword": ["county teen birth trends", "county trends on teen births", "nchs", "teen births", "u.s. teen birth rate", "united states"], "landingPage": "https://www.cdc.gov/nchs/data_access/vitalstatsonline.htm", "language": ["English"], "license": "https://www.usa.gov/government-works", "modified": "2025-04-21", "programCode": ["009:020"], "publisher": {"@type": "org:Organization", "name": "Centers for Disease Control and Prevention"}, "references": ["http://onlinelibrary.wiley.com/doi/10.1111/rssa.12266/abstract", "http://www.cdc.gov/nchs/data/nvss/bridged_race/County_Geography_Changes.pdf", "http://www.cdc.gov/nchs/nvss/dvs_data_release.htm", "http://www.sciencedirect.com/science/article/pii/S1877584516300442", "https://www.cdc.gov/nchs/data/nvsr/nvsr66/nvsr66_01.pdf", "https://www.cdc.gov/nchs/data_access/vitalstatsonline.htm", "https://www.cdc.gov/nchs/nvss/bridged_race.htm"], "rights": "public", "spatial": "50 states and District of Columbia", "temporal": "2003/2020", "theme": ["National Center for Health Statistics"], "title": "NCHS - Teen Birth Rates for Age Group 15-19 in the United States by County"}