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Children’s Environmental Health Initiative
University of Notre Dame
1011 Flanner Hall
Notre Dame, IN 46556
https://cehi.nd.edu/

Linked NC births and lead test results data, cohort years 1992-2009

This dataset is the combination of two sources: 1. 'Births' – Detailed birth records for births in North Carolina from 1990 through 2013. 2. 'Lead' – Blood lead level (BLL) test results for children residing in North Carolina for October 1992 through December 2015. The resulting linked dataset includes all birth and lead records for children born in the cohort years, regardless of whether they are linked. Indicators are provided to easily identify records that contain both birth and lead data for a child, only birth information, or only lead information. All records are retained so that researchers can compare the linked population to those not linked and identify biases if they exist

Source: NC Department of Health and Human Services, Children's Environmental Health Program and NC Dept of Health and Human Services, Vital Statistics

bloodleadBLLPbDBRbirthsmaternalneonataldetailedlong formvital statisticshealthpregnancy


Categories

Health

Creators

CEHI

Geography & Dates

Geographic Extent NC
Geographic Resolution Address
Dataset Geocoded Yes
Dates Covered (in MM/DD/YY format) 10/17/92 to 12/31/05

Additional Metadata

File Format csv
Number of Records 3,091,449
Dataset Size (in KB) 679,129
Dataset Created 01/21/20
Metadata Last Updated 06/03/21
Version 1

Access & Use Information

DOI https://doi.org/10.25614/cohort_dbr_lead_1992_2009
Access Restriction Authorization required
Applicable Regulatory Laws HIPAA

Notes

This dataset includes blood lead level test results. There can be multiple lead tests for each child. All test result records are kept in the analysis dataset. An indicator that can be used to de-duplicate, creating one record per child, is also included. The birth cohort group of October 1992 through December 2009 were selected based on data availability: Birth data is available, processed, and geocoded for years 1990-2013. Lead data is available, processed, and geocoded for years 1992-2015. However, there are scant few records prior to October 1992. Thus, October 1992 is effectively the beginning of the available lead data. The linkage file covers birth years 1990-2013 linked to lead years 1992-2015. Using these available years of data: * Lead data begins in October 1992. * Since there may be incomplete results for Births in 1990 thru September 1992, those births are omitted. * Since lead data through 2015 was used for linking, children who did not have a BLL test before 2016 will not be linked. 98% of children have their first BLL test before age 6. Thus, for children born in 2009, 98% will have had their first BLL test by the end of 2015, and therefore will have been included in the linking process. * It is rare to use BLL test results for children past age 7. For children born in later years (2007-2009), this will pick up their first BLL test (since the first typically happens by age 5), but we may miss subsequent tests if done at age 6 or 7.