U.S. Dept. of Justice, Federal Bureau of Investigation. UNIFORM CRIME REPORTING PROGRAM DATA [UNITED STATES]: COUNTY-LEVEL DETAILED ARREST AND OFFENSE DATA, 1994. 3rd ICPSR ed. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [producer and distributor], 2001. https://doi.org/10.3886/ICPSR06669.v3
Persistent URL: https://doi.org/10.3886/ICPSR06669.v3
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Uniform Crime Reports,
Date of Collection:
County law enforcement agencies in the United States.
Data Collection Notes:
(1) As in past years, data were aggregated to the
county level. However, two major changes to the UCR county-level files
are being implemented with the 1994 release. A new imputation
algorithm to adjust for incomplete reporting by individual law
enforcement jurisdictions has been adopted. Within each county, data
from agencies reporting 3 to 11 months of information were weighted to
yield 12-month equivalents. Data for agencies reporting less than 3
months of data were replaced with data estimated by rates calculated
from agencies reporting 12 months of data located in the agency's
geographic stratum within their state. Secondly, a new Coverage
Indicator has been created to provide users with a diagnostic measure
of aggregated data quality in a particular county. Data from agencies
reporting only statewide figures were allocated to the counties in the
state in proportion to each county's share of the state population.
(2) No arrest data were provided for Kansas, and only the city of
Wichita provided offense data for Kansas. Also, no arrest or offense
data were reported for the state of Montana. Complete data were not
reported for Delaware, Illinois, and Mississippi. For drug offenses,
Alabama reported only totals for drug sale/manufacture and drug
possession. Breakdowns of individual drug categories were not
reported. (3) Uniform Crime Reporting (UCR) program staff at the
Federal Bureau of Investigation (FBI) were consulted in developing the
new adjustment procedures. However, these UCR county-level files are
not official FBI UCR releases and are being provided for research
purposes only. Users with questions regarding these UCR county-level
data files can contact the National Archive of Criminal Justice Data
at ICPSR. (4) The codebook is provided as a Portable Document Format
(PDF) file. 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.
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:
Standardized missing values.
Performed recodes and/or calculated derived variables.
Checked for undocumented or out-of-range codes.