Risk-adjusted rate of urgent readmission for the surgical patient group.

Cases within the denominator with a non-elective readmission within 30 days of discharge after the index episode of care.

Number of surgical episodes of care discharged between April 1 and March 1 of the fiscal year.

Numerator: Delivery; Chemotherapy for neoplasm; Admission for mental illness; Admission for palliative care; Medical assistance in dying; Records with an invalid admission date Denominator: Records with an invalid health card number/invalid code for province issuing health card number/invalid admission date or time/invalid discharge date or time/admission category of cadaveric donor or stillbirth; Episodes with discharge as death; Presence of at least one record in the episode with Mental Diseases and Disorders/Pregnancy and Childbirth/palliative care coded as most responsible diagnosis.

Age group; Sex; Urgent admission; number of acute care hospitalisations in previous 6 months; Charlson score; COVID-19; case mix group (those that account for the top 80% of the total number of readmissions among surgical patients).

Discharge Abstract Database, Hospital Morbidity Database, National Ambulatory Care Reporting System.

CIHI website: The Health Indicators e-Publication (at regional, provincial/territorial and national levels, calculated by place of residence), webtools Your Health System: In Depth (available to public) and Your Health System: Insight (available to available to health care organisations, including hospitals, health regions and ministries/departments of health).

www.cihi.ca/en/indicators/surgical-patients-readmitted-to-hospital

www.cihi.ca/sites/default/files/document/model-specifications.pdf www.cihi.ca/en/equity-stratifiers