Examining Prison Stays in Michigan, 1985-2008 (ICPSR 37034)

Version Date: May 15, 2018

Cite this study |

Principal Investigator(s):
Justin Smith, Central Michigan University

https://doi.org/10.3886/ICPSR37034.v1

Version V1

Slide tabs to view more

Summary

These data are part of NACJD's Fast Track Release and are distributed as they were received from the data depositor. The files have been zipped by NACJD for release, but not checked or processed except for the removal of direct identifiers. Users should refer to the accompanying readme file for a brief description of the files available with this collection and consult the investigator(s) if further information is needed.

This research sought to analyze the length of time served by state prisoners in Michigan from 1985 to 2008. It was conducted to address research that showed Michigan had the longest prison stays in the United States of America, the substantial impact that time served had upon state prison populations, and to assess the effect of parole and sentencing policy on time-served. The research utilized National Corrections Reporting Program (NCRP) data available through the National Archive of Criminal Justice Data (NACJD) in order to build upon past-research and contribute to the understanding of state-specific patterns and trends across offenses and racial groups.

In order to address policy effects upon time served, the purpose of this study was to contextualize patterns of time served across 20 years within the parole and sentencing policy changes in Michigan; the impact of reforms in 1999 were of particular focus.

There are no data files available with this study. Only syntax files used by the researcher(s) are provided.

Citation

Smith, Justin. Examining Prison Stays in Michigan, 1985-2008. Inter-university Consortium for Political and Social Research [distributor], 2018-05-15. https://doi.org/10.3886/ICPSR37034.v1

Export Citation:

  • RIS (generic format for RefWorks, EndNote, etc.)
  • EndNote

Funding

United States Department of Justice. Office of Justice Programs. National Institute of Justice (2016-R2-CX-0036)

Subject Terms

Geographic Coverage

Smallest Geographic Unit

State

Distributor(s)

Inter-university Consortium for Political and Social Research
Hide

Time Period(s)

1985 -- 2005, 2008

Date of Collection

1985-01-01 -- 2006-03-31, 2009-01-01 -- 2009-03-31

Data Collection Notes

  1. These data are part of NACJD's Fast Track Release and are distributed as they were received from the data depositor. The files have been zipped by NACJD for release, but not checked or processed except for the removal of direct identifiers. Users should refer to the accompanying readme file for a brief description of the files available with this collection and consult the investigator(s) if further information is needed.

  2. There are no data files available with this study. Only syntax files used by the researcher(s) are provided.

  3. The data for the National Corrections reporting Program (NCRP) are restricted access data.

Hide

Study Purpose

In order to address policy effects upon time served, the purpose of this study was to contextualize patterns of time served across 20 years within the parole and sentencing policy changes in Michigan; the impact of reforms in 1999 were of particular focus.

Study Design

A secondary analysis of National Corrections Reporting Program (NCRP) data was conducted for the years 1985 through 2008. An initial analysis included all years to show trends across the full time period. A second analysis examined the differences between two cohorts: admissions to prison between 1997-1998 and admissions between 2000-2001. The two cohorts were followed for the same amount of time, seven years. Noting that 2008 is the final year of the larger NCRP dataset, this was the longest stretch of time the analysis could examine releases for those admitted to prison under the new sentencing guidelines and truth-in-sentencing policies enacted in 1999.

Sample

Individuals released from prison in Michigan from 1985-2008.

Time Method

Longitudinal, Longitudinal: Cohort / Event-based

Universe

All persons admitted to prison, released from prison, discharged from parole, or in prison at year's end 1985-2008 in the United States.

Unit(s) of Observation

Individual

Data Source

National Corrections Reporting Program (NCRP) Series. For additional information on the National Corrections Reporting Program (NCRP) Series, please visit the series web page.

Data Type(s)

Mode of Data Collection

Description of Variables

Each case in the National Corrections Reporting Program (NCRP) dataset includes variables on demographic characteristics, offense for the conviction, length of stay in prison, prior jail time, prior felonies, year of admission, and year of release.

Response Rates

Not Available

Presence of Common Scales

None

Hide

Original Release Date

2018-05-15

Hide

Weight

None

Hide

Notes

  • These data are part of NACJD's Fast Track Release and are distributed as they were received from the data depositor. The files have been zipped by NACJD for release, but not checked or processed except for the removal of direct identifiers. Users should refer to the accompanying readme file for a brief description of the files available with this collection and consult the investigator(s) if further information is needed.

  • 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.