National Archive of Criminal Justice Data

This dataset is maintained and distributed by the National Archive of Criminal Justice Data (NACJD), the criminal justice archive within ICPSR. NACJD is primarily sponsored by three agencies within the U.S. Department of Justice: the Bureau of Justice Statistics, the National Institute of Justice, and the Office of Juvenile Justice and Delinquency Prevention.

Violence Against Police: Baltimore County, Maryland, 1984-1986 (ICPSR 9347)

Principal Investigator(s): Uchida, Craig D.; Brooks, Laure W.


This data collection examines individual and situational characteristics of nonfatal assaults on police officers in the Baltimore County Police Department. In the assault data, variables include: (1) information on the officer such as age, race, sex, height, weight, education, rank, assignment, years of experience, weapon, and injury sustained, (2) information on the offender(s) such as age, race, sex, height, weight, weapon, injury sustained, and arrest status, and (3) information on the actual situation and incident itself, such as type of call anticipated, type of call encountered, type of location, numbers of persons present (by role, e.g., assaulter, nonassaulter, complainant, etc.), type of initial officer action, actions of suspect before assault, sobriety/drug use by suspects, and final disposition. The calls for service data were collected to provide an indication of the frequency of various types of calls. In these data, variables include time of call, initial call category, disposition code, and sheet ID.

Access Notes

  • The public-use data files in this collection are available for access by the general public. Access does not require affiliation with an ICPSR member institution.


DS1:  Assaults Data (Raw Data) - Download All Files (2.028 MB)
ASCII + SAS Setup    SPSS Setup   
DS2:  Calls for Service Data - Download All Files (2.399 MB)
DS3:  SPSSx Export File for Assaults Data - Download All Files (0.426 MB)

Study Description


Uchida, Craig D., and Laure W. Brooks. Violence Against Police: Baltimore County, Maryland, 1984-1986. ICPSR09347-v1. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 1997.

Persistent URL:

Export Citation:

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  • EndNote XML (EndNote X4.0.1 or higher)


This study was funded by:

  • United States Department of Justice. Office of Justice Programs. National Institute of Justice (86-IJ-CX-0022)

Scope of Study

Subject Terms:    assaults on police, offenders, police officers, police response

Geographic Coverage:    Maryland, United States

Time Period:   

  • 1984-01-01--1987-03-31

Date of Collection:   

  • 1987

Universe:    All calls for service in Baltimore County, Maryland, from 1984 through 1986.

Data Type(s):    event/transaction data


Sample:    For Part 2, Calls for Service Data, an activity sample was based on calls for police services that were received between January 1, 1987, and March 31, 1987. From this 90-day period, 14 days of calls were randomly selected.

Data Source:

police department records

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.


Original ICPSR Release:   1990-05-16

Version History:

  • 1997-09-11 SAS and SPSS data definition statements have been created for this collection.

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