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In Reply: We appreciate the chance to revisit our analyses of the trends in marijuana abuse and dependence from 1991-1992 to 2001-2002. Dr Earleywine suggests differential increases in marijuana-related legal problems as an explanation for the marked increases in marijuana abuse and dependence rates for younger black men and women and younger Hispanic men. Taking advantage of the ability of the 2 data sets to be disaggregated down to the diagnostic criteria level, we examined rates of marijuana-related legal problems in both time periods for the separate age, sex, and race/ethnic groups. We found increases from 1991-1992 to 2001-2002 in marijuana-related legal problems for the overall sample and for young white as well as young black and Hispanic subgroups. Thus, we do not find support for the hypothesis that differences in increases in marijuana-related legal problems explain the marked shift in patterns of marijuana abuse and dependence among ethnic minorities. . . . [Full Text of this Article]

Wilson M. Compton, MD, MPE
wcompton@nida.nih.gov

James D. Colliver, PhD; Meyer D. Glantz, PhD
Division of Epidemiology
Services and Prevention Research
National Institute on Drug Abuse
National Institutes of Health
Department of Health and Human Services
Bethesda, Md

Bridget F. Grant, PhD, PhD; Frederick S. Stinson, PhD
Laboratory of Epidemiology and Biometry
Division of Intramural Clinical and Biological Research
National Institute on Alcohol Abuse and Alcoholism
National Institutes of Health
Department of Health and Human Services
Bethesda, Md

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