Using data from two waves of the National Epidemiologic Survey of Alcohol and Related Conditions (NESARC), Hasin and colleagues recently reported that the past-year prevalence of marijuana use in the United States has more than doubled in a decade (2002/2003–2012/2013), alongside a sharp increase in the past-year prevalence of DSM-IV marijuana use disorder.1 We analyzed data from the adult samples (ages 18+) of the 2002–2013 National Survey on Drug Use and Health (NSDUH; N=451,160) to directly compare prevalences and trends in marijuana use and marijuana use disorder from that survey with those from the NESARC. The NSDUH is an annual survey representative of the household-dwelling population of the United States and is a primary source of information about prevalence and trends in drug use. Similar methods have been used annually since 2002 with typical response rates around 75%.2–4
