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CAMH research suggests potential targets for prevention and early identification of psychotic disorders

New study is largest known of its kind to track past mental health service use for young people diagnosed with a psychotic disorder

2024-06-21
(Press-News.org) A new study by the Centre for Addiction and Mental Health (CAMH), entitled Mental Health Service Use Before First Diagnosis of a Psychotic Disorder and published in JAMA Psychiatry, found that nearly 75 per cent of young Ontarians with a psychotic disorder had at least one mental health service visit within the three years prior to their first diagnosis of the disorder.

The retrospective cohort study—one of the largest of its kind—suggests that youth with a psychotic disorder are nearly four times as likely to have a previous mental health-related hospital admission, twice as likely to have a mental health-related emergency department visit, and more likely to have a past diagnosis of substance use disorder compared to youth diagnosed with a mood disorder.

“Our findings suggest that these factors—prior mental health-related hospital admissions and emergency department visits, and prior diagnosis of substance use disorder—may indicate increased risk for a psychotic disorder,” says Dr. Nicole Kozloff, Co-Director of the Slaight Family Centre for Youth in Transition at CAMH. “These results are remarkably consistent with other jurisdictions outside Canada, and should guide further research into detecting and intervening earlier in the course of psychotic illness.”

As part of the study, the researchers used information held by ICES on health service use and other linked data to examine previous mental health use in Ontarians aged 15-29 years who were later diagnosed with a psychotic disorder between April 1, 2012 and March 31, 2018. The team identified more than 10,000 individuals with a first diagnosis of psychotic disorder and matched them with individuals who were diagnosed with a mood disorder.

“Those at risk for psychosis are ‘hiding in plain sight,’” says Dr. Aristotle Voineskos, Vice President, Research at CAMH and Director of the Campbell Family Mental Health Research Institute. “These data provide a very different picture of who is at risk for psychosis, and also suggest the opportunity moving forward to examine whether effective treatment for prior conditions may change the risk for psychosis.”

The early findings from this research inspired the launch of the Toronto Adolescent & Youth (TAY) Cohort Study at CAMH. This five-year study is tracking 1,500 children and youth presenting for mental health services, examining their biology, education and cognition, social factors, and service use patterns. The goal is to increase understanding of who is at risk for psychosis and, most importantly, how to mitigate that risk via earlier intervention.

This research underpins a key pillar of CAMH’s new strategic plan, Get Upstream, which aims to position the hospital at the forefront of early mental illness identification, prevention strategies, and timely access to high-quality care.

CAMH is already a leader in both research and clinical care for youth experiencing psychosis. The Slaight Family Centre for Youth in Transition’s unique integrated approach translates the latest clinical and scientific evidence into better intervention and recovery strategies, making a real difference in the lives of young people. The Slaight Centre houses an outpatient early psychosis intervention program, clinical high risk program, and an inpatient early psychosis unit, which treat more than 425 patients on average each month between the ages of 14 to 29 years old.

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About the Centre for Addiction and Mental Health (CAMH) 

CAMH is Canada's largest mental health and addiction teaching hospital and a world leading research centre in this field. CAMH combines clinical care, research, education, policy development and health promotion to help transform the lives of people affected by mental illness and addiction. CAMH is fully affiliated with the University of Toronto, and is a Pan American Health Organization/World Health Organization Collaborating Centre. For more information, please visit camh.ca or follow @CAMHnews on X, formerly Twitter.

Media Contact:

CAMH Media Relations
media@camh.ca

END



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[Press-News.org] CAMH research suggests potential targets for prevention and early identification of psychotic disorders
New study is largest known of its kind to track past mental health service use for young people diagnosed with a psychotic disorder