2014-06-25 All parts are being moved from restricted access to public access.
All parts are being moved to restricted access and will be available only using the restricted access procedures.
Setup files have been added for 1989 Data (Part 2), 1989-1990 Data (Part 3), and 1990-1991 Data (Part 4).
Codebooks have been created for 1989 Data (Part 2), 1994-1995 Cross-Reference Data (Part 9), and 1995-1996 Cross-Reference Data (Part 11).
2005-11-04 On 2005-03-14 new files were added to one
or more datasets. These files included additional setup files as well
as one or more of the following: SAS program, SAS transport, SPSS portable,
and Stata system files. The metadata record was revised 2005-11-04 to
reflect these additions.
2000-02-21 Parts 12 and 13, cross-reference files for 1997 and
1998, have been added to the collection, along with corresponding SAS
and SPSS data definition statements and PDF codebooks.
1999-03-25 SAS and SPSS data definition statements for Part 1,
1987-1988 Data, and the PDF codebooks for all years that were
announced in June 1998 are now available. In addition, the parts have
been renumbered, and the codebook and SAS data definition statement
files are no longer listed in the template.
1998-06-30 Data for the 1995-1996 fiscal year
(Part 14) and a cross-reference file (Part 15) have been added, along
with a corresponding PDF codebook. Also, SAS and SPSS data definition
statements for Part 1, 1987-1988 Data, have been added, and the
codebooks for all years are now available as PDF files.
1990-05-01 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:
- Performed consistency checks.
- Checked for undocumented or out-of-range codes.