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System Performance

Interpretation Note

Wait times have been impacted by reduced service delivery during the COVID-19 pandemic. Under the Chief Medical Officer of Health’s Directive #2 and Memorandum, from March 19 to May 26, 2020, health service providers and health service organizations including hospitals were directed to reduce elective surgeries and other non-emergency clinical activities to preserve capacity during the pandemic. To learn more about the impact on surgery and diagnostic imaging volumes, please click here.

To see the impact on volume for a specific procedure, please scroll down to the last section of this page to generate a graph for volume.


This is how long patients waited from deciding with the surgeon or specialist to proceed with the surgery or procedure - other than pediatric, cancer, cardiac, orthopedic or eye surgery - to having the surgery or procedure. Wait times are calculated after each patient has had their surgery.


Provincial × Surgery

Patients with emergency conditions (Priority 1) are seen immediately. They are not included in wait times data shown here. The wait time is displayed for the larger health organization to which a hospital belongs. Even if a procedure is not offered at a selected hospital, data will appear for the larger health organization.

Learn about priority levels and target times.

April 2020
All Patients Combined:

97%of patients were treated within the target time

Priority 4 Patients:

Patients who should be treated within a target time of 182 days

Waited on average


100% of patients were treated within target time
Priority 3 Patients:

Patients who should be treated within a target time of 84 days

Waited on average


98% of patients were treated within target time
Priority 2 Patients:

Patients who should be treated within a target time of 28 days

Waited on average


94% of patients were treated within target time


Provincial × Surgery

Compare results across hospitals for the priority level with the most patients:

For this surgery, most patients are categorized as Priority 4. Hospitals with no data available will not appear in the comparison table. Learn why some data is not available.

Hospital name Average (Days)
Ontario 41
Halton Healthcare Services Corporation 10

Percentage of patients whose surgery was completed within the provincial target wait time, in Ontario, 201904 to 202004
201904 96.0
201905 95.0
201906 97.0
201907 96.0
201908 96.0
201909 95.0
201910 95.0
201911 96.0
201912 97.0
202001 96.0
202002 97.0
202003 96.0
202004 97.0


Data source: Wait Time Information System™ (WTIS™), Cancer Care Ontario. For more information, please visit the Indicator Library for the technical description of average time, volume, and percentage within target.

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