Concurrent Use of E-cigarettes, Combustible Cigarettes, and Marijuana

Concurrent Use of E-cigarettes, Combustible Cigarettes, and Marijuana, in Pediatrics.

Key takeaway: "The most frequent user groups were triple users (ever-use proportion: 16.9%), dual (e-cigarette and marijuana) users (15.8%), and exclusive e-cigarette users (13.2%).... Co-occurrence of e-cigarette, cigarette, and marijuana use is currently substantial among adolescents and is associated with an elevated psychosocial risk profile."