An estimate of the impact of drug testing on the deterrence of drug use

This study developed an estimate of the ability of the Navy's drug testing program to deter drug use. Drug use in the Navy was compared to comparable groups of civilians over time in order to determine the impact of testing. Deterrence was defined as the proportion of drug users in the Navy (individuals who would use drugs at least once during a 30-day period) who no longer would use drugs if testing were conducted at a specific monthly test rate (e.g., 20%). Findings indicated that drug testing at present levels deters almost 60% of potential drug use.