2016-07-20 Corrections were made to two records. Case number 40001 was dropped, as government records show that she was pardoned. For case number 50367, the method of execution was changed from hanging to electrocution.
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.
2004-02-27 Data from the years 1992 through 2002 have been
added to the data file. The SPSS and SAS data definition statements
have been updated accordingly and Part 2 of this study, old SAS
data definition statements will be removed, leaving all files in only
one part. The ASCII codebook has also been updated and converted to a
1988-01-06 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.