Multivariate analyses.

During the global COVID-19 pandemic, emergency departments (EDs) saw an overall decrease in utilization. However, some vulnerable groups, such as those living with psychotic disorders, must often rely on the services provided by EDs. The literature in this area lacks methodologically robust longitudinal studies which examine the ED utilization patterns of individuals with psychotic disorders both before and during the pandemic. This research was a longitudinal retrospective cohort study of individuals with a psychotic disorder in Newfoundland and Labrador before COVID-19 (2011–2019) and during the pandemic (2020–2022). Patients diagnosed with a psychotic disorder between April 1st, 2011, and March 31st, 2022, who were between 15–24 years old, and who visited an ED at least once, were included. Average monthly visits were used to measure ED visits to control for differences in each individual’s data. Independent variables in the analyses were: 1) age, 2) sex, 3) geographic region, 4) urban or rural residence, and 5) ED visit before or during COVID-19. Multiple linear regression with Generalized Estimating Equations (GEE) modelling was used to identify factors associated with mean monthly ED visits. Multivariate analysis showed the mean monthly ED visits increased significantly during the first year of COVID-19 than before the pandemic (Mean = 0.30 vs Mean = 0.21, p = 0.01). Female individuals and rural residents also had significantly higher mean monthly ED visits than male individuals (Female = 0.51 vs Male = 0.21, p