Definitions

Total Time Spent in ER: Measured by subtracting the triage time or registration time (which ever comes first, depending on the hospital's process) from the "time patient left ER".
 
Provincial Target: Ontario has two targets for time spent in ER:
  • < 8 hours for all admitted patients, and non-admitted high acuity patients (CTAS 1-3)
  • < 4 hours for all non-admitted low acuity patients (CTAS 4 & 5)
See a detailed explanation of the Provincial Targets
 
Provincial Time Spent in ER: The time spent in ER value calculated from all time spent in ER data submitted in Ontario.
 
LHIN Time Spent in ER: The time spent in ER value calculated from all time spent in ER data submitted for each LHIN..
 
90th percentile: The maximum amount of time in which 9 out of 10 patients have completed their ER visit.
 
Median time spent in ER: The maximum amount of time in which 5 out of 10 patients have completed their ER visit.
 
Average time spent in ER: A typical length of stay of a patient derived by dividing the total time spent in ER of all ER visits by the total number of visits. Unlike median, average time spent in ER is affected by extreme values.

Average Wait Time = total time spent in ER (hours) for all ER visits
                                                  total number of visits
 
Admitted Patients: Refers to the maximum amount of time 9 out of 10 admitted patients spent within the ER from the time they arrive and check in to the time they leave the ER to a hospital bed.
 
Non-Admitted Patients: Refers to the maximum amount of time 9 out of 10 patients whose conditions are not life threatening and generally of a non-urgent nature spend within the ER (no more than 4 hours) from the time they arrive and check in to the time their visit is complete and they leave the ER to go home.
 
CTAS: Canadian Triage and Acuity Scale is a five point scale used by ERs to evaluate a patients' acuity level to more accurately define their needs and allow for timely care.
 
Inclusion and exclusion criteria for time spent in ER reporting: Time Spent in ER is calculated based on completed ER cases submitted that fulfill all the conditions necessary to calculate the ER performance metrics. See a full summary of inclusion and exclusion criteria.
 
NA = Not Available
 
NC = Non-compliant: This means that a hospital was required to report wait times data for this service, but did not report by the deadline for publication on this website.
 
NV = No or low volume: This means that a hospital, which is required to report, either reported that they did not have any ER visits during the period, or the number of cases reported did not meet the indicator threshold.
 
NR = Not required to report: This means that a hospital was not required to report their data.
 
NS = No service information available: This means that a hospital does not have Emergency Services.
 
RI = Reporting Issue: This facility did not meet the data quality criteria for reporting purposes. However the facility's data has been incorporated in the LHIN and Provincial level data.
 
Hospital Type: There are differences among hospitals. The services a hospital provides and the number of patients it treats can impact how long you have to wait in an ER. For example, an ER that tends to treat very severe/urgent patients may have longer wait times. Hospitals have been grouped by various categories to simplify the comparison.
 
Teaching Hospital: Teaching Hospitals provide acute and complex patient care and have membership in the Council of Academic Hospitals of Ontario (CAHO). They are affiliated with a medical or health sciences school, are involved in significant research activity, and provide training for interns and residents.
 
Very High-Volume Community Hospital: Very High-Volume Community Hospitals treat over 50,000 annual ER visits.
 
High-Volume Community Hospital: High-Volume Community Hospitals treat between 30,000 to less than 50,000 annual ER visits.
 
Medium-Volume Community Hospital: Medium-Volume Community Hospitals treat between 20,000 to less than 30,000 annual ER visits.
 
Low-Volume Community Hospital: Low-Volume Community Hospitals treat less than 20,000 annual ER visits. In general, these hospitals are the only hospital available in a given community.
 
Paediatric Hospital: Paediatric Hospitals treat only patients 18 years of age or less. Generally they will provide all types of paediatric services.
 
Urgent Care Centre: Urgent Care Centres provide services to patients without an appointment seeking treatment for non-life threatening conditions during the day, in the evening and on weekends. Urgent Care Centres are equipped to provide all types of treatment, with the exception of surgery.