@article{ref1,
title="Predicting Drug Use at Electronic Music Dance Events: Self-Reports and Biological Measurement",
journal="Evaluation review",
year="2009",
author="Holder, Harold D. and Miller, Brenda A. and Voas, Robert B. and Johnson, M. B.",
volume="33",
number="3",
pages="211-225",
abstract="Most information on the prevalence of drug use comes from self-report surveys. The sensitivity of such information is cause for concern about the accuracy of self-report measures. In this study, self-reported drug use in the last 48 hr is compared to results from biological assays of saliva samples from 371 young adults entering clubs. The relationship between self-reports and drug presence in oral fluid was determined for three substances as follows: cocaine, marijuana, and amphetamine. Forty-one percent of the participants with drugs detected in their oral fluids reported no use in the last 48 hr. The significance of these results is discussed.<p />",
language="",
issn="0193-841X",
doi="10.1177/0193841X09333253",
url="http://dx.doi.org/10.1177/0193841X09333253"
}