… economic conditions and the use of illicit drugs other than … evidence on the cyclicality of
illicit drug use. However, we find … use as well as increases in clinically relevant substance use …

… the incidence of illicit drug use (ie new users). In this paper, estimates of illicit drug use
incidence are … data from the National Household Survey on Drug Abuse. Incidence of marijuana …

… to mortality among illicit drug users in developing countries. The current estimates suggest
that … in the United States. After reviewing this evidence, the United States National Research …

… THE TASK of describing the scope of illicit drug use, abuse, and addiction in the United
States has been and still is difficult. Most of the data needed for estimates simply do not exist. …

… drug abuse is a significant problem in the United States. However, no single research study
or source of information fully documents the nature and extent of the problem… of usage levels …

… , illicit drug use was defined as use of a substance where consumption has been prohibited
by international drug … cannabis use and supply varies in some countries, (eg United States, …

… of illicit drug and cigarette use—from occasional to heavy use. … among illicit drug users
compared to those not using illicit … , among illicit drug users, heavier drug use and polydrug use …

… This report presents an overview of illicit drug use, illicit drug use disorders, and drug
overdose deaths for metropolitan and nonmetropolitan areas in the United States. The findings of …

… use of illicit drugs remains an enormous and growing problem throughout the United
States … The association of cocaine use with sudden death due to myocardial ischaemia and …

… The purpose of this study was to examine the prevalence and correlates of illicit substance
use … was past year abuse of or dependence on any illicit substance, including cocaine, heroin, …