This report discusses the methodology used in the 2010 to 2012 National Survey on Drug Use and Health (NSDUH) report that assesses past year alcohol use disorder and illicit drug use disorder among persons aged 12 or older by 362 substate regions within the 50 States and the District of Columbia. Topics covered include past month substance use (e.g., illicit drugs, marijuana, cocaine, pain relievers, alcohol, tobacco), substance dependence, abuse, and treatment need, past year serious mental illness (SMI), any mental illness (AMI), suicidal thoughts, and major depressive episode (MDE).
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