Our Performance

Access Indicators

St. Michael's Hospital monitors the time it takes to access many different types of care.

Emergency Indicators

When someone arrives at Emergency, his or her condition is assessed using a five-point scale called the Canadian Emergency Department Triage and Acuity Scale (CTAS). The more serious an injury or illness, the lower the CTAS rating. For example, a serious, traumatic requiring resuscitation might be classified as CTAS 1 while a walk-in patient with a broken finger might be CTAS 5. Wait times are monitored for patients at each level of acuity.

The other component that affects the indicators is whether or not a patient needs to be admitted to hospital. Most Emergency patients receive the care they need and go home but some require ongoing care and are admitted as inpatients. Wait times for each type of patient are monitored.

Emergency Department Lengths of Stay

Ontario’s targets are based on the 90th percentile. This means the maximum amount of time 9 out of 10 patients spend in Emergency being diagnosed, treated or waiting for admission. Most patients spend less time but one out of 10 patients will spend more time. Wait times are calculated from registration through to discharge.

Key Indicators

Non-admitted, high acuity patients

This graph looks at monthly wait times for patients who are not admitted to hospital but have complex conditions requiring more time for diagnosis and treatment. St. Michael's is just over the provincial target but is working hard to reduce wait times.

What is Non-Admit High Acuity EDLOS?


Non admitted, low acuity patients

This graph looks at monthly wait times for patients who are not admitted to hospital and have minor, uncomplicated conditions requiring less time for diagnosis and treatment. St. Michael's wait times are trending downwards.

What is Non-Admit Low Acuity EDLOS?


Admitted patients

This graph looks at monthly wait times for patients who are admitted as inpatients after their Emergency stays. The provincial target is currently 18.2 hours. St. Michael’s continues to work towards a faster transition from Emergency to an inpatient bed.

What is Admit EDLOS?


Wait times

All hospitals in Ontario are required to report their wait times for several types of cancer and joint replacement surgeries. They also report on wait times for non-urgent MRIs and CT scans. The table below shows St. Michael’s wait times for the most recent quarter for which data is available, the applicable provincial target and the average wait times for other hospitals in our geographic area.

St. Michael's Wait Times (April - June 2013)

Program Wait Time (in days)
Breast Cancer 55
General Surgery - Colorectal 51
General Surgery - Urology 56
Urology - Prostate 73
Central Nervous System 93
Joint Replacement
Hip Primary 370
Knee Primary 207
Diagnostic Scans
MRI - Priority 4 246
CT - Priority 4 133