Vaping marijuana was also higher among noncollege young adults than among college students. Nearly 8 percent of noncollege adults vaped, compared with 5.2 percent of college students.
The largest difference between daily rates for college students and noncollege adults was in the cigarette category. About 14 percent of noncollege peers smoked daily, while 2 percent of college students smoked every day. Past month use of vaping nicotine was also higher, with about 8 percent of noncollege adults vaping nicotine, compared with 6 percent of college students.
While misuse of Vicodin in both college and noncollege peers decreased from 2009 to 2017, synthetic drug use over the last year was higher in noncollege peers than in college students.
More about the findings is at the NIH website.