Previous studies, by relying on nationally representative surveys, have overlooked the important fact that use of addictive substances is not uniformly distributed; subgroups of hardcore users account for most of the drug consumption. This study employs the Drug Use Forecasting system to analyze...

This paper estimates the empirical relationship between the prices of cocaine and heroin and objective indicators of use. The set of outcomes is drug related hospital emergency department admissions where cocaine and heroin are cited, for 21 large U.S. metropolitan areas. These outcomes are...