Home > Trends in cannabis use prior to first admission to inpatient psychiatry in Ontario, Canada, between 2007 and 2017 (report at a glance).

Canadian Centre on Substance Use and Addiction. (2022) Trends in cannabis use prior to first admission to inpatient psychiatry in Ontario, Canada, between 2007 and 2017 (report at a glance). Ottawa: Canadian Centre on Substance Use and Addiction.

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Highlights the correlation between cannabis use and admission to inpatient psychiatry beds in Ontario between 2007 and 2017. The study shows that prior cannabis use was common among people at first admission to inpatient psychiatry. It suggests that trends in use among vulnerable groups, such as those with mental illness, need to be monitored to evaluate the effect of cannabis-related policies on different cohorts of psychiatric inpatients.

Key points:

• Prior cannabis use has become more common among individuals at first admission to inpatient psychiatric beds in Ontario.
• Young adults (ages18 to 24 years) were more likely to use cannabis before first admission to inpatient psychiatry than older adults (ages 55 years and older).
• The proportion of adults ages 55 to 64 years using cannabis more than doubled between 2007 (0.1%) and 2017 (1.8%).
• Gender differences in cannabis use exists among individuals at first admission to inpatient psychiatry in Ontario.
• Those with prior abuse (e.g., physical, verbal, sexual) and lower levels of education have increased odds of cannabis use.
• Patients with a history of violent ideation were more likely to have used cannabis before admission compared with patients with no violent ideation.
• Having a mood disorder or experiencing mania or psychotic symptoms were strongly associated with cannabis use.
• Using tobacco and alcohol were strongly associated with cannabis use.
• Cannabis use increased by 9.9% in males compared with 7.9% in females between 2007 and 2017. Males with schizophrenia were more likely to use cannabis but females with schizophrenia were less likely to use cannabis.

Item Type
Report
Publication Type
International, Report
Drug Type
Cannabis
Intervention Type
Screening / Assessment
Date
March 2022
Pages
2 p.
Publisher
Canadian Centre on Substance Use and Addiction
Corporate Creators
Canadian Centre on Substance Use and Addiction
Place of Publication
Ottawa
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