MarijuanaNID

MarijuanaNID - Marijuana Use Disorders in the United States...

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Unformatted text preview: Marijuana Use Disorders in the United States: 1991-1992 and 2001-2002 Wilson M. Compton, M.D., M.P.E. Director, Division of Epidemiology, Services and Prevention Research National Institute on Drug Abuse Department of Health and Human Services May 5, 2004 American Psychiatric Association Annual Meeting Background A great deal of information about trends in use of drugs is available, but no data provides reliable and valid measures of drug disorders over the past decade. Background With data from two large household surveys of the U.S. adult population, this study seeks to answer the following questions: 1. What are the rates of marijuana abuse and dependence in 1991-1992 compared to 2001-2002? 2. Have the relationships of age, race/ethnicity or gender to marijuana abuse and dependence changed during this period? Methods Studies: • Large studies of the U.S. non-institutionalized household adult (18+) population conducted by the Census Bureau. • NLAES: National Longitudinal Alcohol Epidemiologic Study (N = 42,862) • NESARC: National Epidemiologic Study of Alcohol and Related Conditions (N = 43,093) Methods Interview: • AUDADIS: Alcohol Use Disorder and Related Disabilities Interview Schedule - DSM-IV Version – Specific measures of each criterion of abuse and dependence on marijuana – Reliability and validity well-established Methods Outcomes • Marijuana use, abuse and dependence in overall population and by age, race/ethnicity and sex • Marijuana abuse and dependence among marijuana users by age, race/ethnicity and sex Results: Total Population 4.0 1.2 30.2 4.1 1.5 35.6 5 10 15 20 25 30 35 40 Use Abuse/Dependence Abuse/Dependence in Users NLAES 1991-1992 NESARC 2001-2002 = p < .05 % Results: Total Population Comparing 1991-1992 to 2001-2002: • Marijuana use rates were virtually the same: 4.0% versus 4.1% • Marijuana abuse or dependence increased from 1.2% to 1.5% (p = .014) • Marijuana abuse or dependence among users increased from 30.2% to 35.6% (p < .01) How consistent are these results across age groups, race/ethnic groups and sexes? Results:...
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MarijuanaNID - Marijuana Use Disorders in the United States...

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