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<July 2020>
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Wait Times

Emergency Room, Surgery & Diagnostic Imaging

The Huron Perth Healthcare Alliance is participating in the MoHLTC's wait time strategy.The Stratford site is participating in:

  • Hips & Knee Replacements
  • Cataract Surgery
  • Specific Cancer Surgeries
  • CT Scanner
  • MRI
  • Emergency Room

Cataract surgery is performed at both the Clinton and Stratford sites of the Alliance.

To access Surgical /DI or Emergency room wait time data specific for the Alliance as well as for the province, please click on the following url and follow the instructions.




= The typical number of days 15 people would have waited for a surgery or test.  To calculate the average wait time add up the wait times for all 15 people and divide by the total number of people waiting, in this example 15.  For example the average of these 15 wait times (8, 10, 11, 13, 13, 15, 18, 15, 18, 19, 19, 19, 20, 20, 23) is 241 total days divided by 15 people = 16 days.

Median = The midpoint wait time of a group of people that waited for a surgery or a test.   If you put the wait times of 15 people in order shortest to longest, the wait time of the middle person, in this case the 8th person is the median.  Median of those same 15 wait times (8, 10, 11, 13, 13, 15, 15, 18, 18, 19, 19, 19, 20, 20, 23) is 18 days.  i.e. Half of the people waited less than the median and half waited more than the median.  Note - While the average and the median can be the same, they are often different.

90th Percentile = The number of days in which 9 out of 10 people have had their surgery or test completed.  If you put the wait times of 10 people in order shortest to longest, the wait time of the 9th person is the 90th Percentile.  i.e. 90% of the people waited less than the 90th percentile and 10% waited more than the 90th percentile.  For example the 90th percentile of these 10 wait times (15, 15, 18, 18, 19, 19, 19, 20, 21, 23) is the wait time of the 9th person = 21 days.


Visit The South West Local Health Integration Network at.http://www.southwestlhin.on.ca/

Learn more about Ontario’s Wait Time Strategy.http://www.health.gov.on.ca/en/public/programs/waittimes/