Since none of the state data files documenting the crash and injury events at the scene, en route, and at the hospital have sufficient information alone to document medical and financial outcome for specific factors related to motor vehicle crashes, NHTSA funded Hawaii, Maine, Missouri, New York, Pennsylvania, Utah, and Wisconsin to implement Crash Outcome Data Evaluation Systems to develop data linkage capabilities and highway safety and injury control applications for the linked data, and perform the required analyses. The CODES sites successfully linked statewide police reported crash reports to emergency medical services, emergency department, hospital discharge, rehabilitation, long term care, death certificate and claims data. Each state's linked data base is person specific, population-based, statewide, includes at least 12 months of data, and permits tracking of all persons involved in motor vehicle crashes from the scene to final disposition. Access to the linked data is controlled by each CODES states.
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