Journal
HUMAN PSYCHOPHARMACOLOGY-CLINICAL AND EXPERIMENTAL
Volume 30, Issue 1, Pages 42-51Publisher
WILEY
DOI: 10.1002/hup.2449
Keywords
prescription stimulants; co-ingestion; simultaneous use; adolescents; polydrug use
Funding
- National Institute on Drug Abuse, National Institutes of Health [R01DA024678, R01DA031160, T32 DA007267, R01DA01411]
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ObjectiveTo determine the past-year prevalence rates and correlates of simultaneous co-ingestion of prescription stimulants and other substances among US high school seniors. MethodsNationally 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 12431 high school seniors (modal age: 18years) and represented a population that was 53% female. ResultsAmong past-year nonmedical users of prescription stimulants (n=835), the estimated prevalence of any past-year simultaneous co-ingestion of prescription stimulants and other substances was 64.4%. The substances most commonly co-ingested with prescription stimulants included marijuana (51.1%) and alcohol (48.4%). Nonmedical users who co-ingested prescription stimulants with other substances were more likely to report non-oral routes of administration, recreational motives and greater subjective high when using prescription stimulants than nonmedical users who did not co-ingest prescription stimulants with other substances. ConclusionsThe majority of past-year nonmedical users of prescription stimulants reported simultaneous co-ingestion of prescription stimulants and other substances. The findings indicate that co-ingestion of prescription stimulants and other substances is a pervasive behavior among US adolescents who engage in nonmedical use of prescription stimulants and should be carefully considered in future clinical practice and research. Copyright (c) 2014 John Wiley & Sons, Ltd.
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