United States Department of Transportation
i
Investigation of the Accuracy of Alcohol and Drug Involvement Reporting
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2019-09-01
[PDF-1.01 MB]
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Abstract:Researchers compared the 2013 to 2017 fatal crash data from the KSP database to the crash data from the FARS database to check the consistency and accuracy of alcohol and drug involvement reporting for drivers in the KSP database. The indications of alcohol and drug involvement in the FARS database were used as the ground truth due to the inclusion of laboratory test results confirming the presence of alcohol and/or drugs in a driver’s system. For the five-year study period, the indications for alcohol involvement were 85.8% consistent and the indications of drug involvement were 66.2% consistent between the two databases. Of the fatal crashes where FARS confirmed alcohol involvement for a driver, KSP crash reports only identified 64.2% as involving alcohol. Of the fatal crashes where FARS confirmed drug involvement for a driver, KSP crash reports only identified 11.8% as involving drugs.
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