The study used 2022–23 data from 8,722 individuals aged 12-34 in the Population Assessment of Tobacco and Health study who reported using nicotine, tobacco or cannabis in the past 30 days. Researchers found that users averaged about two products in that period, and classified users into six distinct user subgroups: combustible tobacco, 31%; multiple forms of cannabis, 27%; vaping nicotine, 18%; multiple forms and co-use of nicotine, tobacco and cannabis, 14%; cannabis edibles, 5%; multiple forms and co-use of nicotine and tobacco, 5%.

https://www.news-medical.net/news/20251208/Understanding-the-heterogeneity-in-nicotine-tobacco-and-cannabis-use-among-young-Americans.aspx