DMC Facts and Figures

The Research and Evaluation Staff compile existing research and information related to DMC and work with the state of Iowa and selected sites to conduct data analysis and information 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. The "relative rate index" (RRI) is a way to compare processing rates of minority youth compared to White youth. If the processing rate for minority youth is identical to those of White youth, the relative rate index is a "1." For a step-by-step explanation of the new method, see the power point at:

DMC Resource Center. The DMC Res. Ctr 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.

RELATIVE RATE INDEX TABLES - State and Targeted Sites [access to NCJJ population data click here]

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

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

2003-2007 BH Chart illustrating trend by decision point

POLK COUNTY

DMC 2007 Matrices - Polk County

DMC 2006 Matrices - Polk County

DMC 2005 Matrices - Polk County

DMC 2004 Matrices - Polk County

2003-2007 Polk Chart illustrating trend by decision point

WOODBURY COUNTY

DMC 2007 Matrices - Woodbury County

DMC 2006 Matrices - Woodbury County

DMC 2005 Matrices - Woodbury County

DMC 2004 Matrices - Woodbury County

2003-2007 Wdbry Chart illustrating trend by decision point

JOHNSON COUNTY

DMC 2007 Matrices - Johnson County

LINN COUNTY

DMC 2007 Matrices - Linn County

WEBSTER COUNTY

DMC 2007 Matrices - Webster County

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

DMC Data in Selected Iowa Counties

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