What does CTAS mean?
Patients triaged at Emergency and Urgent care facilities are assessed on their presenting condition with an acuity level between 1 and 5 based on the Canadian Triage and Acuity Scale (CTAS). Those patients requiring immediate intervention and possibly resuscitation are assessed as CTAS level 1. CTAS level 2 (emergent) and CTAS level 3 (urgent) categories represent patients needing attention. Patients attending emergency for less-urgent (CTAS 4) and non-urgent conditions (CTAS 5) may represent conditions which would be more appropriately addressed in primary care where available. Assignment of CTAS levels at triage can vary across sites. For the purpose of this report, when a CTAS level is not recorded, a value of 9 (meaning “unknown”) is subsequently assigned. Where this value (9) occurs, the percentages of patients seen at that site with CTAS levels 1 though 5 may not total to 100%.