This indicator measures the total ED length of stay* where 9 out of 10 complex patients completed their visits.
*ED length of stay defined as the time from triage or registration, whichever comes first, to the time the patient leaves the ED.
Step 1: Calculate ED length of stay in hours for each patient.
Step 2: Apply inclusion and exclusion criteria.
Step 3: Sort the cases by ED length of stay from shortest to longest.
Step 4: The 90th percentile is the case where 9 out of 10 complex patients have completed their visits.
- Admitted patients – Disposition Codes 06 and 07
- Non-Admitted Patients – (Disposition Codes 01, 04 – 05 and 08 – 15) with assigned CTAS I, II, or III
ED visits where Registration Date/Time and Triage Date/Time are both blank/unknown (9999)
ED visits where the MIS functional centre is under Emergency Trauma, Observation or Emergency Mental Health Services (as of January 2015 data)
Duplicate cases within the same functional center where all ER data elements have the same values except for Abstract ID number
ED visits where the ED visit Indicator is = '0'
ED visits where patient has left without being seen by a physician during his/her visit (Disposition Code 02 and 03)
ED Length of Stay is greater than or equal to 100000 minutes (1666 hours)
Non-Admitted Patients (Disposition Codes 01 – 05 and 08 – 15) with assigned CTAS IV or V
Non-Admitted Patients (Disposition Codes 01 – 05 and 08 – 15) with missing CTAS