Analyzes the variation in prevalence rates of various substances in terms of age, year, and class effects. Interprets data provided by the Monitoring the Future Project, an ongoing survey of nationally representative high school senior classes. (KH)
Analyzes the variation in prevalence rates of various substances in terms of age, year, and class effects. Interprets data provided by the Monitoring the Future Project, an ongoing survey of nationally representative high school senior classes. (KH)