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Data

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."  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.

Statewide20152014
Black Hawk20152014
Dubuque2015N/A
Johnson20152014
Linn20152014
Polk20152014
Pottawattamie20152014
Scott20152014
Webster2015N/A
Woodbury20152014