There are four general categories of data on which qualified researchers may perform statistical analysis inside the secure ARDC.
Economic Data: Censuses and surveys of business establishments and firms. With very few exceptions, no public use files exist for these surveys.
- List of Economic datasets in the RDCs
- Business Registry and Longitudinal Business Database, Power Point Introduction (2011)
- Overview of Economic Directorate Data, Power Point Introduction (2011)
Demographic Data: Censuses and surveys of households and individuals. Most of these datasets are released as public use files, but the versions in the secure RDC are not the public use versions. These restricted RDC versions include a more complete geography (in some cases down to the block). Also, items such as income are often not top coded. Individual identifiers such as name, address, and social security numbers have been removed.
Mixed Data: Includes Longitudinal Employer-Household Dynamics (LEHD) datasets. LEHD uses unemployment insurance records to match employer data with employee data.
- List of LEHD datasets available in the RDCs
- LEHD Information
- LEHD Power Point Introduction (2011)
- Abowd et al. paper on LEHD
Health Data: ARDC provides access to restricted NCHS and AHRQ datasets for approved proposals. To obtain approval, submit a proposal to the appropriate agency.
National Center for Health Statistics (NCHS):
Agency for Healthcare Research and Quality (AHRQ):
Public-use Census data are not directly available at the ARDC. However, pending approval from CES, outside data sets may be brought in and matched to non-public Census microdata.
RDC Datasets Available by Topic
(For more information on the following datasets, go to the lists of Economic Datasets or Demographic Datasets.)
- National Crime Victimization Survey – collects information from individuals on the frequency, characteristerics, and consequences of criminal victimization
- American Housing Survey – collects respondent’s perception of neighborhood crime and vandalism
- Survey of Income and Program Participation – in topical modules, collects respondent’s perception of neighborhood crime and children’s safety, and preventive measures taken.
- Current Population Survey (March Supplement) – if a household moved in last year, collects information on reason for move and “better neighborhood/less crime” is one of the answer choices.
- 1992 Characteristics of Business Owners – asks business owners how crime affected the profitability of business.
- American Housing Survey – collects detailed information on housing topics, such as size and quality of housing stock, and characteristics of occupants
- American Community Survey – collects information on the physical and financial characteristics of the respondent’s housing
- Decennial Surveys (1970-2000) – collects information on the physical and financial characteristics of the respondent’s housing from the “long form”
- Survey of Income and Program Participation – in topical modules, collects information on the financial characteristics of the respondent’s housing and other real estate owned
- Current Population Survey (March Supplement) – collects information on the financial characteristics of the respondent’s housing
- Survey of Business Owners – asks business owners if business was started/expanded with home equity loan and if business operated from the home
Small Business/Self Employment:
- Integrated Longitudinal Business Database (ILBD): Business database containing both employers and nonemployers (i.e., businesses with no employees). Tracks businesses as they transition from nonemployer to employer status. (1992,1994-2000)
- Survey of Business Owners/Characteristics of Business Owners (SBO/CBO): Survey of economic and demographic characteristics of business owner. Contains questions on firm history, business conditions and source of financing. Covers businesses with and without employees.
- Longitudinal Business Database (LBD) – Long time series tracking firm entry and exit starting in 1976. Contains data on firm size and age. Can be merged with other Census data.
- Kauffman Firm Survey (KFS) – the use of an internal version of the Kauffman Firm Survey that can be linked to restricted Census economic datasets. The KFS is a panel survey of 4,928 businesses founded in 2004