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dmc facts and figures


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The Research and Evaluation Staff compile existing research and information related to DMC and work with local sites and the state gather and analyze data and information for dissemination.


New DMC Matrices Using the Relative Rate Index

As part of the reauthorization of the Juvenile Justice and Delinquency Prevention Act (JJDP Act), the federal Office of Juvenile Justice and Delinquency Prevention (OJJDP) designed matrices states are required to submit with their annual JJDP Act formula grant application. The matrices present major decision points and compare processing “rates” by race and ethnicity through the relative rate index. DMC previously focused on comparing “percentages” of minority youth at confinement with their representation in the general population (DRI or disproprotionality rate index). The "relative rate index" (RRI) is an improved way to compare rates. If the processing rate for one race/ethnic category of youth is identical to that of another, the relative rate index is a "1." For a step-by-step explanation of the new method, see the power point click here. The DMC Resource Center encourages users of the matrices to examine the population based rate tab, examine each group and consider what an "acceptable rate" is in addition to the relative rate.

In 2010 the DMC Resource Center began an initiative to gather data on school suspensions, expulsions and arrests to help understand the connections and further understand the school to court "pipeline." Data from Iowa Department of Public Education can be found clicking here.

For Child Welfare rates (click here)

RELATIVE RATE INDEX TABLES - State and Targeted Sites provided by Criminal and Juvenile Justice Planning [for access to NCJJ population data click here]


STATE OF IOWA

DMC 2010 Matrices - State of Iowa

DMC 2009 Matrices - State of Iowa

DMC 2008 Matrices - State of Iowa

DMC 2007 Matrices - State of Iowa

DMC 2006 Matrices - State of Iowa

DMC 2005 Matrices - State of Iowa

DMC 2004 Matrices - State of Iowa

2003-2007 Chart illustrating trend by decision point

2003-2009 Chart illustrating trend by decision point (new format)

BLACK HAWK COUNTY

DMC 2010 Matrices - Black Hawk County

DMC 2009 Matrices - Black Hawk County

DMC 2008 Matrices - Black Hawk County

DMC 2007 Matrices - Black Hawk County

DMC 2006 Matrices - Black Hawk County

DMC 2005 Matrices - Black Hawk County

DMC 2004 Matrices - Black Hawk County

2004-2007 Chart illustrating trend by decision point

POLK COUNTY

DMC 2010 Matrices - Polk County

DMC 2009 Matrices - Polk County

DMC 2008 Matrices - Polk County

DMC 2007 Matrices - Polk County

DMC 2006 Matrices - Polk County

DMC 2005 Matrices - Polk County

DMC 2004 Matrices - Polk County

2004-2007 Chart illustrating trend by decision point

WOODBURY COUNTY

DMC 2010 Matrices - Woodbury County

DMC 2009 Matrices - Woodbury County

DMC 2008 Matrices - Woodbury County

DMC 2007 Matrices - Woodbury County

DMC 2006 Matrices - Woodbury County

DMC 2005 Matrices - Woodbury County

DMC 2004 Matrices - Woodbury County

2004-2007 Chart illustrating trend by decision point

JOHNSON COUNTY

DMC 2010 Matrices - Johnson County

DMC 2009 Matrices - Johnson County

DMC 2008 Matrices - Johnson County

DMC 2007 Matrices - Johnson County

DMC 2006 Matrices - Johnson County

DMC 2005 Matrices - Johnson County

2005-2007 Chart illustrating trend by decision point

LINN COUNTY

DMC 2010 Matrices - Linn County

DMC 2009 Matrices - Linn County

DMC 2008 Matrices - Linn County

DMC 2007 Matrices - Linn County

DMC 2006 Matrices - Linn County

DMC 2005 Matrices - Linn County

WEBSTER COUNTY

DMC 2010 Matrices - Webster County (coming soon)

DMC 2009 Matrices - Webster County

DMC 2008 Matrices - Webster County

DMC 2007 Matrices - Webster County

SCOTT COUNTY

DMC 2010 Matrices - Scott County

DMC 2009 Matrices - Scott County

DMC 2008 Matrices - Scott County

DUBUQUE COUNTY

DMC 2010 Matrices - Dubuque County

DMC 2009 Matrices - Dubuque County

 

DES MOINES COUNTY

DMC 2010 Matrices - Des Moines County

DMC 2009 Matrices - Des Moines County

DMC 2008 Matrices - Des Moines County

STORY COUNTY

DMC 2010 Matrices - Story County

DMC 2009 Matrices - Story County

DMC 2008 Matrices - Story County

POTTAWATTAMIE COUNTY

DMC 2010 Matrices - Pottawattamie County

DMC 2009 Matrices - Pottawattamie County

DMC 2008 Matrices - Pottawattamie County

Early Relative Rate Indices

2005 RELATIVE RATE INDEX TABLES [CLICK ON Relative Rate Table] and Chart (CLICK ON CHART)

State of Iowa Relative Rate Table State of Iowa Chart of 2004-2005 Relative Rates

Black Hawk County Relative Rate Table Black Hawk County Chart of 2004-2005 Relative Rates

Polk County Relative Rate Table Polk County Chart of 2004-2005 Relative Rates

Scott County Relative Rate Table Scott County Chart of 2004-2005 Relative Rates

Webster County Relative Rate Table Webster County Chart of 2004-2005 Relative Rates

Woodbury County Relative Rate Table Woodbury County Chart of 2004-2005 Relative Rates

Linn County Relative Rate Table Linn County Chart of 2004-2005 Relative Rates

Johnson County Relative Rate Table Johnson County Chart of 2004-2005 Relative Rates

Dubuque County Relative Rate Table Dubuque County Chart of 2005 Relative Rates

Story County Relative Rate Table Story County Chart of 2005 Relative Rates

Marshall County Relative Rate Table Marshall County Chart of 2005 Relative Rates

Cerro Gordo County Relative Rate Table Cerro Gordo Chart of 2005 Relative Rates

 

PREVIOUS YEARS' MATRICES

2004 Relative Rate Index Tables (CLICK ON Relative Rate Table)

State of Iowa Relative Rate Table

Black Hawk County Relative Rate Table

Polk County Relative Rate Table

Scott County Relative Rate Table

Webster County Relative Rate Table

Woodbury County Relative Rate Table

Linn County Relative Rate Table

2003 Relative Rate Index Tables

State of Iowa Relative Rate Table

Selected Counties (2003)
Black Hawk County Relative Rate Table

Johnson County Relative Rate Table

Muscatine Relative Rate Table

Polk County Relative Rate Table

Scott County Relative Rate Table

Webster County Relative Rate Table

Woodbury County Relative Rate Table

2003 - 2004 OccRateRRI03-04.CWRRI Chart and Child Welfare Disproportionality Data

DMC Coordinators Meeting Agenda

Draft Document on Effective Technical Assistance

Relative Rate Index

State of Iowa

Updated Table | 2002 Chart

  2002 2002

Black Hawk County

Table

Chart

Hamilton, Humboldt & Wright Counties Table Chart
Muscatine County Table Chart
Polk County Table Chart
Scott County Table Chart
Woodbury County Table Chart

DMC Data in Selected Iowa Counties
DMC in Selected Iowa Counties Woodbury County Tama County Humboldt, Wright, and Hamilton Counties Scott County Muscatine County Polk County Johnson County Blackhawk County

 

DMC in Iowa: Statistics and Graphs using the DRI: Disproportionate Rate Index

 

DMC Quickfacts

Juvenile Detention by Race

1998 - 2002


 
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