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Census Quality Survey Public Use Data File, 2001: [United States] (ICPSR 3901)

Principal Investigator(s): United States Department of Commerce. Bureau of the Census


This study was designed with the primary objective of producing a data file that could be used to bridge between the "single" race distribution in the 1990 Census and other household surveys and the "one or more races" distribution in Census 2000. The Census Quality Survey (CQS) was a nationally representative sample of about 55,000 households. Responding to a mailback questionnaire, one-half of the sample household respondents were asked to "mark one race," and during a telephone recontact, these respondents were asked to "select one or more races." For the other half of the sample households, the reverse procedure was used. Data from these two contacts may be used to produce "bridging parameters" to compare race distributions collected under methodologies that request either one race or one or more races. In addition, Census 2000 records were matched to their respective CQS records (with a match success rate of 86 percent). The matched records may also be used to produce bridging estimates.

Access Notes

  • Data in this collection are available only to users at ICPSR member institutions. Please log in so we can determine if you are with a member institution and have access to these data files.


DS1:  Census Quality Survey Data - Download All Files (15.808 MB)
ASCII + SAS Setup    SPSS Setup    Stata Setup   
DS2:  Census Quality Survey to Evaluate Responses to the Census 2000 Question on Race: An Introduction to the Data
No downloadable data files available.

Study Description


United States Department of Commerce. Bureau of the Census. Census Quality Survey Public Use Data File, 2001: [United States] . ICPSR03901-v2. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2011-06-14. https://doi.org/10.3886/ICPSR03901.v2

Persistent URL: https://doi.org/10.3886/ICPSR03901.v2

Export Citation:

  • RIS (generic format for RefWorks, EndNote, etc.)
  • EndNote XML (EndNote X4.0.1 or higher)

Scope of Study

Subject Terms:    census data, census methods, ethnicity, race

Geographic Coverage:    United States

Time Period:   

  • 2001

Date of Collection:   

  • 2001

Universe:    All persons and housing units in the United States in 2000.

Data Type(s):    survey data

Data Collection Notes:

The codebook accompanying Part 1 data and documentation distributed as Part 2 are provided by the principal investigator as Portable Document Format (PDF) files. The PDF file format was developed by Adobe Systems Incorporated and can be accessed using PDF reader software, such as the Adobe Acrobat Reader. Information on how to obtain a copy of the Acrobat Reader is provided on the ICPSR Web site.


Sample:    A nationally representative sample of about 55,000 households was drawn.

Data Source:

mailback questionnaires and telephone interviews

Extent of Processing:   ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. ICPSR also routinely creates ready-to-go data files along with setups in the major statistical software formats as well as standard codebooks to accompany the data. In addition to these procedures, ICPSR performed the following processing steps for this data collection:

  • Created variable labels and/or value labels.


Original ICPSR Release:   2004-01-22

Version History:

  • 2011-06-14 SAS, SPSS, and Stata setups have been added to this data collection.



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