6 patterns define young adult substance use in the US

University of Michigan and Penn State University identified 6 patterns of substance use days: vaping nicotine (33.69 %), cannabis smoking (23.49 %), alcohol only (17.10 %), cannabis vaping (11.72 %), multiple combustibles (7.28 %) and multimodal cannabis (6.72 %) days – all mainly due to stress and boredom.