Research Papers

The Accuracy and Reliability of Evaluations by Drug Recognition Experts in Canada

Filename Beirness.pdf
Filesize 125 KB
Version 1
Date added June 18, 2008
Downloaded 2 times/fois
Category 2008–CMRSC-XVIII–Whistler
Tags Dr. Charles H. Miller Award Winner, session 16
Author/Auteur Douglas J. Beirness, Erin Beasley, Jacques LeCavalier
Award/Prix Dr. Charles H. Miller

Abstract

Winners of the Dr. Charles H. Miller Award for 2008 (L. to R. Doug Beirness, Erin Beasley, and Jacques LeCavalier)

Winners of the Dr. Charles H. Miller Award for 2008
(L. to R. Doug Beirness, Erin Beasley, and Jacques LeCavalier)

The objective of this paper is to illustrate the accuracy and reliability with which police officers trained as Drug Recognition Experts (DREs) can identify the category of drug(s) ingested by persons believed to be impaired by a drug. In the first of two studies, we examined 1,349 drug evaluations completed by DREs in Canada to determine whether DRE opinions about the category of drug(s) matched the results of toxicological analysis in terms of accuracy. The paper presents measures of sensitivity, specificity, the false alarm rate, and miss rate for all drug categories combined as well as for the most commonly found substances. The second study examined the inter-rater reliability of DRE evaluations by having a group of certified DREs review each of 23 selected evaluation reports and render an opinion on the type of drug involved. The data presented demonstrate that the drug evaluations conducted by DREs in Canada are both accurate and reliable.

Douglas J. Beirness, Erin Beasley, Jacques LeCavalier