Trends in American Homicide, 1968-1978: Victim-Level Supplementary Homicide Reports (ICPSR 8676)

Published: Jan 12, 2006

Principal Investigator(s):
Marc, Riedel; Margaret Zahn

Version V1

This study was undertaken to standardize the format of national homicide data and to analyze trends over the period 1968-1978. The unit of analysis is the homicide victim, and variables include information on the reporting agency, the circumstances of the incident, and the characteristics of the victim and the offender. Within these categories are variables pertaining to population and city size, victim's and offender's age, race, and sex, and the number of victims and offenders involved in the incident. Information about the incident includes the type of weapon used and the circumstances surrounding the incident.

Riedel, Marc, and Zahn, Margaret. Trends in American Homicide, 1968-1978:  Victim-Level Supplementary Homicide Reports. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2006-01-12.

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United States Department of Justice. Office of Justice Programs. National Institute of Justice (79-NI-AX-0092)

1968 -- 1978

The data have been reformatted because of the difficulty in using FBI data as they are released. The reformatting has resulted in the unit of observation (homicide victim) being constant across the study period. The storage mode is "character-numeric." Two major changes in FBI coding of the Supplementary Homicide Reports have resulted in relatively consistent coding within the time periods 1968-1972, 1973-1975, and 1976-1978, but not among them.

Homicide victims in the United States.

Supplementary Homicide Reports data from the Uniform Crime Reporting Program.

aggregate data



2006-01-12 All files were removed from dataset 12 and flagged as study-level files, so that they will accompany all downloads.

1987-05-19 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.


  • 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.

  • The citation of this study may have changed due to the new version control system that has been implemented.
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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.