Objective To determine the past-year prevalence rates and correlates of simultaneous co-ingestion of prescription stimulants and other substances among US high school seniors. Methods Nationally representative probability samples of US high school seniors were surveyed as a part of the Monitoring the Future study. The sample consisted of five cohorts including a total of 12?431… Continue reading Simultaneous co-ingestion of prescription stimulants, alcohol and other drugs: a multi-cohort national study of US adolescents