Crash Outcomes Data Evaluation System (CODES)

Link crash report data with health outcomes data; provide reports and technical information; present results at state and national conferences; maintain CODES website.

The purpose of the Peer to Peer Demonstration from September 1999 to September 2002 was to link computerized databases including crash reports, hospital discharge data, Medicaid and Medicare claims, and paramedic data, using AUTOMATCH probabilistic linking software.

A Brief History

  • 1990: Trudy Karlson attempts to link crash and hospital data together utilizing exact linkage techniques.
  • 1992: NHTSA issues RFP for states to develop linked data using probabilistic linkage. Wisconsin becomes one of first 7 CODES states.
  • 1996: Wisconsin becomes one of 5 states to win a demonstration grant to evaluate serious lower leg injuries.
  • 1997: Wisconsin CODES becomes one of 4-5 states to win contract to become part of a CODES Peer to Peer Group.
  • 1999: Wisconsin CODES wins demonstration grant to evaluate the impact of raising speed limits from 55 to 65mph on selected state highways.
  • 2000: Wisconsin CODES wins grant to become part of CODES Data Network.

Project Duration: 10/1/2000 – present

Primary Personnel

Principal Investigator: Jim Robinson
Consulting Scientist: Wayne Bigelow
Contact: Jim Robinson

Funding Source

Wisconsin Department of Transportation and the Bureau of Transportation Safety


Quarterly reports; linked data


CODES website
Wisconsin Department of Transportation