Trends and Substance Use Associations With E-Cigarette Use in US Adolescents.

Concerns exist that e-cigarette use may introduce adolescents to drugs. This study explores trends and associations of inhaled tobacco use with drug use. We performed a secondary data analysis on the National Youth Risk Behavior Survey examining the inhaled tobacco and drug use patterns among US teens. Adjusted odds ratios were calculated using bivariate and multivariate analyses between inhaled tobacco use with other drug use, adjusting for age, race/ethnicity, and gender. When adjusting for gender, age, and race/ethnicity, teens who use only e-cigarettes had a higher odds than peers who do not use any inhaled tobacco products to have ever tried marijuana or alcohol, currently use marijuana or alcohol, have lifetime drug use, and misused prescription medications. Drug risk behavior appears stratified with type of inhaled tobacco used, with generally exclusive e-cigarette use linked to lowest risk and conventional and e-cigarette use associated with highest risk of drug use.