This indicator measures the risk-adjusted percentage of individuals who had 3 or more episodes of care for mental health and substance use (MHSU) disorders among all those who had at least one episode of care for MHSU disorders in general or psychiatric hospitals within a given year.

Total number of individuals in the denominator who had at least 3 episodes of care for MHSU disorders in a 1-year period. Each individual has a 12-month look-back period prior to their most recent episode of care in a given year. Therefore, data for 2 fiscal years is necessary to obtain the data for the numerator.

Total number of individuals who had at least one episode of care for MHSU disorders in a 1-year period. The most recent episode of care in a fiscal year is the index episode of care.

Records with: an invalid health card number, an invalid code for province issuing health card number, missing age, invalid admission date, invalid discharge date, cadaveric donor or stillbirth status, discharge status of dead on arrival, medical assistance in dying (MAID).

See detailed specifications for risk adjustment: www.cihi.ca/sites/default/files/document/model-specifications.pdf

By age group, recorded sex or gender, neighbourhood income quintile, urban versus rural/remote, mental health category and reporting level: National, Province/Territory, Region.

Discharge Abstract Database (DAD), Hospital Morbidity Database (HMDB), National Ambulatory Care Reporting System (NACRS) and Ontario Mental Health Reporting System (OMHRS)

Online tool: Your Health System

www.cihi.ca/en/access-data-and-reports/indicator-library

www.cihi.ca/en/indicators/repeat-hospital-stays-for-mental-health-and-substance-use