State variation in marijuana use among U.S. adults with cancer.

Abstract

e24064 Background: The number of cancer survivors in the United States (U.S.) is projected to exceed 20 million by 2024. More and more U.S. states are legalizing marijuana use for both recreational and medicinal purposes. This study estimated the prevalence of marijuana use by state among adult cancer survivors. Methods: U.S nationally representative, cross-sectional data from the 2018-2019 Behavioral Risk Factor Surveillance System Survey (BRFSS) Marijuana Use module were used. A total of 13,174 cancer survivors in 17 states was included. Analyses were weighted to account for BRFSS’s complex survey design with results generalizable to 5.7 million cancer survivors. The outcome variable was marijuana use in the past 30 days. Weighted prevalence estimates were computed. Weighted, multivariable logistic regression model estimated the association between state and marijuana use, adjusting for sociodemographic, health, and healthcare factors. Analyses were performed in January 2021. Results: The prevalence of past-month marijuana use among adult cancer survivors in these states was 9.2%. States varied widely in terms of the prevalence of marijuana use. Marijuana use was higher among those who resided in Guam (15.9%), followed by New Hampshire (13.1%), and lowest for those in Puerto Rico (3.3%) ( p< 0.0001). In the adjusted models, compared with the adult cancer survivors residing in California, those living in Maryland, Minnesota, North Dakota, Ohio, South Carolina, Tennessee, Utah, West Virginia, and Wyoming were significantly less likely to use marijuana. Conclusions: Nearly 9% of adult cancer survivors used marijuana, and those who resided in Guam, New Hampshire, Florida, and California are at higher risk for marijuana use. Given the increasing number of cancer survivors and the proliferation of marijuana legalization, identifying high-risk cancer survivors for marijuana use and informing physicians and patients about safe uses and doses and the potential adverse effects of marijuana use is critical.