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Models of shared care for the management of psychotic disorder after first diagnosis in Ontario


Objective — To describe the provision of care for young people following first diagnosis of psychotic disorder.

Design — Retrospective cohort study using health administrative data.

Setting — Ontario.

Participants — People aged 14 to 35 years with a first diagnosis of nonaffective psychotic disorder in Ontario between 2005 and 2015 (N=39,449).

Main outcome measures — Models of care, defined by psychosis-related service contacts with primary care physicians and psychiatrists during the 2 years after first diagnosis of psychotic disorder.

Results — During the 2-year follow-up period, 29% of the cohort received only primary care, 30% received only psychiatric care, and 32% received both primary and psychiatric care (shared care). Among the shared care group, 72% received care predominantly from psychiatrists, 20% received care predominantly from primary care physicians, and 9% received approximately equal care from psychiatry and primary care. Variation in patient and physician characteristics was observed across the different models of care.

Conclusion — One in 3 young people with psychotic disorder received shared care during the 2-year period after first diagnosis. The findings highlight opportunities for increasing collaboration between primary care physicians and psychiatrists to enhance the quality of care for those with early psychosis.



Wiener JC, Rodrigues R, Reid J, Anderson KK. Can Fam Physician. 2023;

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