Importance Prior research suggests that the legalization of recreational cannabis is associated
with increases in cannabis hyperemesis syndrome (CHS), but it is unclear how cannabis …

Introduction An increasing number of countries are inthe process of legalising non‐medical
cannabis. We described how the legal market has changed over the first 4 years following …

Background Cannabis is a risk factor in the onset and persistence of psychotic disorders.
There is concern that non-medical cannabis legalization in Canada may have population-level …

Background: Cannabis use during pregnancy is increasing, but the contribution of cannabis
legalization to these trends is unclear. We sought to determine whether health service …

Methods This was a population-based repeated cross-sectional study that examined all-cause
mortality for individuals aged 10+ years in Ontario, Canada using linked health …

Background: Cannabis is associated with the onset and persistence of psychotic disorders.
Evidence suggests that accessibility of substances is associated with an increased risk of use…

Objective: Rates of alcohol use and alcohol-related harms increase with greater alcohol
availability. However, regional differences in sociodemographic characteristics and built …

Objectives In 2015, Ontario partially deregulated alcohol sales by allowing grocery stores to
sell alcohol. The purpose of this study was to evaluate (1) whether neighbourhood-level …

Background and Methods We conducted a population‐based, retrospective cohort study of
first‐time emergency department (ED) visits in adolescents and young adults (AYA) due to …

Context Current guidelines do not recommend routine use of urinary cultures for managing
uncomplicated urinary tract infections (UTIs) in premenopausal, nonpregnant women. …