Marijuana Use and Driving Under the Influence among Young Adults: A Socioecological Perspective on Risk Factors

ABSTRACTBackground: Given increases in marijuana use and driving under the influence (DUI), it is critical to identify those at risk in order to inform intervention efforts. Objectives: We used a socioecological framework to examine correlates of level of marijuana use and DUI in the past month among young adult marijuana users. Methods: We recruited 1567 participants aged 18–34 years via Facebook ads targeting tobacco and marijuana users in August 2014 to complete an online survey assessing marijuana use and DUI, as well as related multilevel factors. Analyses focused on 649 participants reporting past 30-day marijuana use. Results: The sample was an average age of 24.48 (SD = 5.10), 43.9% female, and 76.4% White and used marijuana an average of 17.86 (SD = 11.29) days in the past month. Notably, 48.4% reported driving after marijuana use at least once in the past month, and 74.0% were passengers. Multivariable regression indicated that greater use was associated with: being older; being male; greater sy...