A5057129585- Cannabis and Cannabinoid Research
- Homelessness and Social Issues
- Substance Abuse Treatment and Outcomes
- Alcohol Consumption and Health Effects
- COVID-19 and Mental Health
- Prenatal Substance Exposure Effects
- Healthcare professionals’ stress and burnout
- Food Security and Health in Diverse Populations
- Smoking Behavior and Cessation
- Forensic Toxicology and Drug Analysis
- Primary Care and Health Outcomes
- Psychedelics and Drug Studies
- Intensive Care Unit Cognitive Disorders
- Reproductive Health and Contraception
- Emergency and Acute Care Studies
- Cardiac Arrest and Resuscitation
- Reproductive Health and Technologies
- Mental Health Treatment and Access
- Poisoning and overdose treatments
- Global Health Workforce Issues
- COVID-19 and healthcare impacts
- Schizophrenia research and treatment
- Religion, Spirituality, and Psychology
- COVID-19 epidemiological studies
- Maternal Mental Health During Pregnancy and Postpartum
University of Ottawa
2018-2025
Ottawa Hospital Research Institute
2019-2025
Ottawa Hospital
2019-2025
Bruyère
2018-2025
University of Hong Kong
2025
Institute for Clinical Evaluative Sciences
2021-2024
3M (United States)
2022-2024
University of Toronto
2022-2024
Centre for Addiction and Mental Health
2024
St. Michael's Hospital
2023
Importance Despite public health concerns that cannabis legalization may increase the number of cases schizophrenia caused by cannabis, there is limited evidence on this topic. Objective To examine changes in population-attributable risk fraction (PARF) for use disorder (CUD) associated with after liberalization medical and nonmedical Canada. Design, Setting, Participants This population-based cohort study was conducted Ontario, Canada, from January 1, 2006, to December 31, 2022, among 13...
Importance Cannabis use disorders (CUD) are associated with adverse health effects, including mental and motor vehicle collision-related injuries. However, little is known about whether CUDs increased mortality risk. Objective To examine individuals receiving incident hospital-based care (an emergency department visit or hospitalization) for a CUD risk of death. Design, Setting, Participants This population-based retrospective cohort study included all aged 15 to 105 years living in Ontario,...
Abstract Background and aims Recreational cannabis was legalized in Canada October 2018. Initially, the Government of Ontario (Canada’s largest province) placed strict limits on number retail stores before later removing these limits. This study measured changes cannabis‐attributable emergency department (ED) visits over time, corresponding to different regulatory periods. Design Interrupted time–series design using population‐level data. Two policy periods were considered; recreational...
This study describes the legal recreational cannabis market across Canada over 2 years following legalisation. We compared changes in access to retail for all provinces and territories (jurisdictions) explored differences between jurisdictions.We collected data stores five time periods legalisation October 2018. examined measures by jurisdiction model (public vs. private operation): absolute per capita store numbers, hours of operation neighbourhoods.Two legalisation, there were a total 1183...
<h3>Importance</h3> Physicians self-report high levels of symptoms anxiety and depression, surveys suggest these have been exacerbated by the COVID-19 pandemic. However, it is not known whether pandemic-related stressors led to increases in health care visits related mental or substance use among physicians. <h3>Objective</h3> To evaluate association between pandemic changes outpatient physicians explore differences across physician subgroups interest. <h3>Design, Setting, Participants</h3>...
We compared trends and characteristics of
Importance Prior research suggests that the legalization of recreational cannabis is associated with increases in hyperemesis syndrome (CHS), but it unclear how commercialization (ie, greater retail store access as well increased variety and potency products) may be these changes. Objectives To examine changes number characteristics CHS emergency department (ED) visits from before to after Ontario, Canada. Design, Setting, Participants This repeated cross-sectional study used interrupted...
Abstract Introduction An increasing number of countries are inthe process legalising non‐medical cannabis. We described how the legal market has changed over first 4 years following legalisation in Canada. Methods collected longitudinal data on operating status and location all cannabis stores Canada for legalisation. examined per capita sales, store closures, drive time between each neighbourhood compared measures public private retail systems. Results Four after legalisation, there were...
Importance Canada legalized cannabis in October 2018 but initially prohibited the sale of edibles (eg, prepackaged candies). Starting January 2020, some provinces permitted commercial edibles. The association legalizing with unintentional pediatric poisonings is uncertain. Objective To evaluate changes proportions all-cause hospitalizations for poisoning due to children during 3 legalization policy periods Canada’s 4 most populous (including 3.4 million aged 0-9 years). Design, Setting, and...
Importance The impact of adult-use cannabis legalization and subsequent commercialization (ie, increasing store product access) on hospitalizations in Canada is unclear. Objectives To examine changes overall subtypes due to associated factors following compare between provinces. Design, Setting, Participants This repeated cross-sectional analysis included all acute for individuals aged 15 105 years Canada’s 4 most populous provinces (Ontario, Quebec, Alberta British Columbia, population 26.9...
<h3>BACKGROUND:</h3> Alcohol use causes a large burden on the health of Canadians, and alcohol-related harms appear to be increasing in many high-income countries. We sought analyze changes emergency department visits attributable alcohol use, by sex, age neighbourhood income over time. <h3>METHODS:</h3> All individuals aged 10 105 years living Ontario, Canada, between 2003 2016 were included this study. The primary outcome was age-standardized rates defined using diagnostic codes from...
Migration to the European Union (EU)/European Economic Area (EEA) affects epidemiology of infectious diseases, including tuberculosis (TB), HIV, hepatitis B/C, and parasitic diseases. Some sub-populations migrants are also considered be an under-immunised group thus at risk vaccine-preventable Providing high-risk access timely efficacious screening vaccination, understanding how best implement more integrated vaccination programmes into health systems ensuring linkage care treatment, is key...
Abstract Objective To analyse the association between survival from critical illness and suicide or self-harm after hospital discharge. Design Population based cohort study using linked validated provincial databases. Setting Ontario, Canada January 2009 December 2017 (inclusive). Participants Consecutive adult intensive care unit (ICU) survivors (≥18 years) were included. Linked administrative databases used to compare ICU with who never required admission (non-ICU survivors). Patients...
<h3>Background:</h3> Cannabis use during pregnancy is increasing, but the contribution of cannabis legalization to these trends unclear. We sought determine whether health service utilization related increased after nonmedical in October 2018 Ontario, Canada. <h3>Methods:</h3> In this population-based, repeated cross-sectional study, we evaluated changes number pregnant people who received acute care (emergency department visit or admission hospital) between January 2015 and July 2021 among...
Episodes of substance-induced psychosis are associated with increased risk developing a schizophrenia spectrum disorder. However, there limited data on the transition for substance use without psychosis.
BackgroundThere is ongoing uncertainty about whether cannabis use increases the risk of developing an anxiety disorder. In this study we estimated having incident healthcare visit for disorder following emergency department (ED) and explored factors associated with increased risk.MethodsWe used health administrative data to perform a population-based cohort all individuals aged 10–105 years no previous visits disorders in Ontario, Canada, between January 2008 March 2019. We compared ED or...
Importance Extracorporeal membrane oxygenation (ECMO) is used as temporary cardiorespiratory support in critically ill patients, but little known regarding long-term psychiatric sequelae among survivors after ECMO. Objective To investigate the association between ECMO survivorship and postdischarge mental health diagnoses adult of critical illness. Design, Setting, Participants Population-based retrospective cohort study Ontario, Canada, from April 1, 2010, through March 31, 2020. Adult...
The impact of nonmedical cannabis legalization on traffic injuries and involvement in is unclear.To examine changes the number characteristics cannabis-involved injury emergency department (ED) visits from before to after subsequent commercialization (ie, increased retail store product availability) Ontario, Canada.This repeated cross-sectional study examined cannabis- alcohol-involved ED Canada, during 3 time periods: prelegalization (January 2010-September 2018), with restrictions (October...
Abstract Introduction There is considerable interest in whether individuals substitute cannabis for alcohol and legalisation's potential to reduce or increase alcohol‐attributable harms. This study aimed determine non‐medical legalisation Canada was associated with initial changes population‐level consumption. Methods observational population‐based described sales between 2004 2022. We calculated annual the per capita volume of pure ethanol sold Canada. used an interrupted time series...