Estimates of alcohol use among non-fatal accidents remain biased by selective BAC testing. The National Accident Sampling System (NASS), relies on a sampling of accident and police reports to obtain estimates of alcohol-involved accidents. Alcohol testing, while not routinely obtained by the police, is routinely obtained on patients admitted to some trauma centers. Although this population is a select group at one end of the spectrum of injury severity, information on these crashes, obtained from police reports, gives some insight into the validity of policereported estimates of alcohol use.