Cross-Validation of the Iowa Offender Risk Assessment Model in Michigan, 1980-1982 (ICPSR 9236)

Published: Jan 18, 2006

Principal Investigator(s):
Richard Alfred Bradshaw

Version V1

These data were collected in an attempt to cross-validate the 1984 and 1985 versions of the Iowa model for assessing risk of offending while on parole by applying the model to a Michigan sample of male parolees over a follow-up period of two and one-half years. Different measures of predictors such as prior criminal history, current offense, substance abuse history, age, and recidivism on parole are available. The first file contains information on parolees such as demographic characteristics, drug use history, prior criminal history, risk scores, and parole history. The second file includes parolees' detailed criminal histories including the total number of violent and nonviolent felony arrests and dates, and charges and dispositions of each arrest with a maximum of eight arrests.

Bradshaw, Richard Alfred. Cross-Validation of the Iowa Offender Risk Assessment Model in Michigan, 1980-1982. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2006-01-18.

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United States Department of Justice. Office of Justice Programs. National Institute of Justice (85-IJ-CX-0035)

1980 -- 1982

1985 -- 1986

A random sample of 676 male parolees was selected from the population of 4,084 inmates released on parole by the Michigan Parole Department during calendar year 1980.

Male parolees in the state of Michigan in 1980.

Michigan Department of Corrections (DOC) criminal files, and state police rap sheet records

event/transaction data



2006-01-18 File CB9236.PDF was removed from any previous datasets and flagged as a study-level file, so that it will accompany all downloads.


  • 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.