CJJP logo, State of Iowa with Scales of Justice Iowa Division of Criminal and Juvenile Justice Planning 321 East 12th Lucas Bldg Second Floor, Des Moines, IA 50309
Criminal Justice Data
Juvenile Justice Data
Data Resources
About CJJP
Iowa Population
Statewide Court
Special Initiatives
Iowa Sex Offender Research Council
Criminal Justice Information Systems Integration (CJIS)
Disproportionate Minority
Iowa Collaboration for Youth Development (ICYD)
Iowa Youth Survey (IYS)
Justice Data Warehouse (JDW)
Juvenile Detention Alternative Initiative (JDAI)
Public Safety Advisory Board (PSAB)
School to Court

DMC Matrices

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.  The "relative rate index" (RRI) is a 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 method to compare relative rates, see the power point click here. Ultimately, state and local users of the matrices will need to examine the rates of each racial/ethnic group and consider what an "acceptable rate" is in addition to the relative rate.  The data provided in the below matrices are “incident” rather than “case/youth” based.

Black Hawk

Relative Rate Index Tables - 2011


This page was last updated on Monday, July 30, 2012
| Department of Human Rights | Website Policies | Contact Us | State of Iowa | Adobe PDF Reader |