Catalog of Holdings

Study Report

Study Number: AH-020-003-1-1-United States-USCEN-1990

Subject Area: Individual

Bibliographic Citation: Census of population and housing, 1990 [United States]: public use microdata sample (B sample): 1 percent sample. [CD-ROM version].  [machine-readable data file] / U.S. Department of Commerce. Bureau of the Census  [principal investigator(s)] / Washington, D.C.: U.S. Department of Commerce. Bureau of the Census  [distributor].

Originating Archive Number: 9951

Date Accessioned: 2/8/1996

Number of Files Received: 63

Comments: PUMA2DSK.EXE program allows users to copy records for individual Public Use Microdata Areas (PUMAs) to disk. At the CD-ROM drive, D:\> type \TOOLS\PUMAS\PUMA2DSK ST B ##### C:\PUBLIC (ST is abbreviation of state names; B is B sample; ##### is 5 digits PUMA codes, refer to \TOOLS\PUMAS\PUMSB.DOC for PUMA codes.) an ASCII output file with .TXT will be put in C:\PUBLIC. For corrected group quarters record information see Pums update .

Access Status: Access limited to UW-Madison campus

Date Ordered: 12/15/1995

Documentation: 2-volume hard copy (shared with AH-020-004) and machine-readable files under /Document subdirectory on the CD-ROM. A second copy of this codebook (shared with AH-020-004) combines both volumes.

Abstract: The Public Use Microdata Sample (PUMS) 1-Percent Sample contains household and person records for a sample of housing units that received the ''long form'' of the 1990 Census questionnaire. Data items include the full range of population and housing information collected in the 1990 Census, including 500 occupation categories, age by single years up to 90, and wages in dollars up to $140,000. Each person identified in the sample has an associated household record, containing information on household characteristics such as type of household and family income.

SOURCE: self-enumerated questionnaires

UNIVERSE: All persons and housing units in the United States.

SAMPLE: A stratified sample, consisting of a sub-sample of the household units that received the 1990 Census ''long-form'' questionnaire (approximately 15.9 percent of all housing units).

NOTE: (1) All PUMS files were resupplied by the Census Bureau during the summer of 1993. ICPSR has incorporated extensive user notes into the machine-readable codebook. PUMA maps, Appendix G of the codebook, are being released on a flow basis by the Census Bureau. These are available in hard copy from ICPSR. (2) Although all records are 231 characters in length, each file is hierarchical in structure, containing a housing unit record followed by a variable number of person records. Both record types contain approximately 120 variables. Two improvements over the 1980 PUMS files have been incorporated. First, the housing unit serial number is identified on both the housing unit record and on the person record, allowing the file to be processed as a rectangular file. In addition, each person record is assigned an individual weight, allowing users to more closely approximate published reports. Unlike previous years, the 1990 PUMS 1-Percent and 5-Percent Samples have not been released in separate geographic series (known as ''A,'' ''B,'' etc. records). Instead, each sample has its own set of geographies, known as ''Public Use Microdata Areas'' (PUMAs), established by the Census Bureau with assistance from each State Data Center. The PUMAs in the 1-Percent Sample are based on a distinction between metropolitan and nonmetropolitan areas. Metropolitan areas encompass whole central cities, Primary Metropolitan Statistical Areas (PMSAs), Metropolitan Statistical Areas (MSAs), or groups thereof, except where the city or metropolitan area contains more than 200,000 inhabitants. In that case, the city or metropolitan area is divided into several PUMAs. Nonmetropolitan PUMAs are based on areas or groups of areas outside the central city, PMSA, or MSA. PUMAs in this 1-Percent Sample may cross state lines.

EXTENT OF COLLECTION: 1 data file per state + machine-readable documentation (text) + database dictionary + SAS Control Cards + SPSS Control Cards.

DATA TYPE: census/enumeration data

DATA FORMAT: LRECL with SAS and SPSS Control Cards

TIME PERIOD: 1990

DATE OF COLLECTION: 1990

EXTENT OF PROCESSING BY ICPSR: MDATA/ NONNUM

Media/File Reports:

7062 (CD-ROM)
7063 (CD-ROM)