1996-10-02 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.
2001-03-15 Parts 62-65 (1999 Full File, 1999
Incident-Level File, 1992-1999 Incident-Level Concatenated File, and
1992-1999 Incident-Level Rape Subset) have been added to this
collection, along with corresponding SAS (Parts 66-68) and SPSS (Parts
69-71) setup files and a PDF codebook (Part 72).
2005-02-11 Data files for 1992 through 1994 (Parts
1, 2, 3, 7, 8, 9, 10 and 11) have been updated. The variable V2125,
previously 'Reserved for Future Use' is now 'Land Use.' The variable
'Scrambled Control Number' has been widened by 4 columns in order to
append '9999' to the end of each Scrambled Control Number. In
addition, the 1994 data (Parts 3, 9, 10 and 11) have been updated to
include the correct data for Quarters 1 and 2 of 1995. The SAS setup
files (Parts 12 and 14) and SPSS setup files (Parts 15 and 17) have
been updated to reflect these changes. The PDF codebooks (Parts 18 and
20) have been updated as well. All Person-Level files (Parts 4, 5, 6,
13, 16, 19, 24, 29, and 32) have been removed from the Web site
because of limited interest in them and the relative ease of creating
person-level files without the limitation of a 10 percent sample of
2005-04-01 All concatenated incident-level files and
rape subset files have been updated. These updates were made because
of a previous change to the 1994 full hierarchical file relating to
quarters 1 and 2 of 1995. The SAS and SPSS setups for these data files
had minor changes to their header statements and are updated as well.
2004-09-02 The Bureau of Justice Statistics has
resupplied the 1999 data. The structures of the data files have not
changed, but the content of all four 1999 data files (Parts 62, 63,
64, and 65) has been updated. SAS and SPSS setup files have been
updated, and the codebook has been modified to reflect these changes.