our population, while, not unlike findings from the National Comorbidity Survey, the highest rate of substance dependence was observed with tobacco at both waves of assessment (Anthony et al., 1994). Overall, despite the high prevalence of alcohol, tobacco, and marijuana repeated-use in our sample, the rates of disorders are consistent with the fact that not all users go on to develop problems of substance abuse or dependence (Anthony and Helzer, 1995; SAMHSA, 2008; Young et al., 2002).
