The LEHD Infrastructure Files and the Creation of the Quarterly Workforce Indicators
The Longitudinal Employer-Household Dynamics (LEHD) Program at the U.S. Census Bureau, with the support of several national research agencies, has built a set of infrastructure files using administrative data provided by state agencies, enhanced with information from other administrative data sources, demographic and economic (business) surveys and censuses. The LEHD Infrastructure Files provide a detailed and comprehensive picture of workers, employers, and their interaction in the U.S. economy. Beginning in 2003 and building on this infrastructure, the Census Bureau has published the Quarterly Workforce Indicators (QWI), a new collection of data series that offers unprecedented detail on the local dynamics of labor markets. Despite the fine detail, confidentiality is maintained due to the application of state-of-the-art confidentiality protection methods. This article describes how the input files are compiled and combined to create the infrastructure files. We describe the multiple imputation methods used to impute in missing data and the statistical matching techniques used to combine and edit data when a direct identifier match requires improvement. Both of these innovations are crucial to the success of the final product. Finally, we pay special attention to the details of the confidentiality protection system used to protect the identity and micro data values of the underlying entities used to form the published estimates. We provide a brief description of public-use and restricted-access data files with pointers to further documentation for researchers interested in using these data.
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|Date of creation:||Mar 2002|
|Date of revision:|
|Contact details of provider:|| Postal: 4600 Silver Hill Road, Washington, DC 20233|
Phone: (301) 763-6460
Fax: (301) 763-5935
Web page: http://lehd.did.census.gov/led/
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- John J. Abowd & John Haltiwanger & Julia Lane, 2004.
"Integrated Longitudinal Employer-Employee Data for the United States,"
American Economic Review,
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- Gary Benedetto & John Haltiwanger & Julia Lane & Kevin McKinney, 2003. "Using Worker Flows in the Analysis of the Firm," Longitudinal Employer-Household Dynamics Technical Papers 2003-09, Center for Economic Studies, U.S. Census Bureau, revised May 2004.
- Abowd, John M. & Vilhuber, Lars, 2005.
"The Sensitivity of Economic Statistics to Coding Errors in Personal Identifiers,"
Journal of Business & Economic Statistics,
American Statistical Association, vol. 23, pages 133-152, April.
- John M. Abowd & Lars Vilhuber, 2002. "The Sensitivity of Economic Statistics to Coding Errors in Personal Identifiers," Longitudinal Employer-Household Dynamics Technical Papers 2002-17, Center for Economic Studies, U.S. Census Bureau, revised Mar 2003.
- John M. Abowd & Paul A. Lengermann & Kevin L. McKinney, 2002. "The Measurement of Human Capital in the U.S. Economy," Longitudinal Employer-Household Dynamics Technical Papers 2002-09, Center for Economic Studies, U.S. Census Bureau, revised Mar 2003.
- John Abowd & Bryce Stephens & Lars Vilhuber, 2006. "Confidentiality Protection in the Census Bureau Quarterly Workforce Indicators," Longitudinal Employer-Household Dynamics Technical Papers 2006-02, Center for Economic Studies, U.S. Census Bureau.
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