Drug and Alcohol Crash Risk Study

Drug and Alcohol Crash Risk Study databases

Drug and Alcohol Crash Risk Study databases Drug and Alcohol Crash Risk Study databases
Drug and Alcohol Crash Risk Study databases

Drug and Alcohol Crash Risk Study databases

NHTSA’s “Crash Risk” study is the first large-scale study in the United States to include drugs other than alcohol. The case-control study was designed to estimate the risk associated with alcohol- and drug-positive driving. Data was collected over 20 months from more than 3000 crash-involved drivers and 6000 control drivers who were not involved in crashes in Virginia Beach, VA. Research teams responded to crashes 24 hours a day, 7 days a week over a 20-month period, and efforts were made to match control drivers to each crash-involved driver to maximize comparability. Participation was voluntary and anonymous. Participating subjects were asked to provide a breath test, oral fluid, and blood samples to determine the presence of alcohol and other drugs.

This study estimated the odds of being involved in a crash if a driver was alcohol- and/or drug-positive. A positive result for a drug does not necessarily mean the driver was impaired at the time of testing, only that the drug was present in the body. Data from this study contributes to a better understanding of the nature and scope of the drugged driving issue.

Data from this study is available in four formats: SAS, SPSS, Stata, and Excel; the data dictionary is compatible for all four file formats.

A weighting variable is provided for application. Its construction is described in the methodology report.