Deborah S Hasin, Melanie M Wall, C Jean Choi, Daniel M Alschuler, Carol Malte, Mark Olfson, Katherine M Keyes, Jaimie L Gradus, Magdalena Cerdá, Charles C Maynard, Salomeh Keyhani, Silvia S Martins, David S Fink, Ofir Livne, Zachary Mannes, Scott Sherman, Andrew J Saxon
IMPORTANCE: Cannabis use disorder (CUD) is increasing among US adults. Few national studies have addressed the role of medical cannabis laws (MCLs) and recreational cannabis laws (RCLs) in these increases, particularly in patient populations with high rates of CUD risk factors. OBJECTIVE: To quantify the role of MCL and RCL enactment in the increases in diagnosed CUD prevalence among Veterans Health Administration (VHA) patients from 2005 to 2019. DESIGN, SETTING, AND PARTICIPANTS: Staggered-adoption difference-in-difference analyses were used to estimate the role of MCL and RCL in the increases in prevalence of CUD diagnoses, fitting a linear binomial regression model with fixed effects for state, categorical year, time-varying cannabis law status, state-level sociodemographic covariates, and patient age group, sex, and race and ethnicity...
March 1, 2023: JAMA Psychiatry