these populations. Bio-behavioral surveys focused on injection drug use can be useful but are expensive and have not always … (AU) to collect drug-use data from drug treatment facilities is undermined by the dearth of facilities addressing the drug … sustained regular monitoring of drug use. But meaningful participation in data collection may be contingent on both concerted …

This study is an empirical assessment of the impact of the drug decriminalization policy followed by Portugal in July … sequence of the policy change. This result contrasts with the argument that softer drug law enforcement necessarily leads to … lower prices and, consequently, to higher drug usage rates and dependence. …