Time from when a 9-1-1 call is received by AHS EMS dispatch to when the first ambulance arrives at the scene of the incident. (see data definition)
Time from when a 9-1-1 call is received by AHS EMS dispatch to when the first ambulance arrives at the scene of the incident. (see data definition)
*Alberta Health Services, Emergency Medical Services, System Performance and Innovation. “EMS Computer Assisted Dispatch (CAD) data.”
When a life-threatening medical event occurs, the amount of time between the occurrence of the incident and when EMS staff arrive is critical.
The chart above tells us how long patients experiencing a life-threatening medical event wait for EMS staff to arrive, from when the 9-1-1 call is received by Alberta Health Services (AHS) EMS dispatch to when the first ambulance arrives at the scene of the incident. When dispatch receives a 9-1-1 call, the severity of the patient’s condition is assessed (triaged) in order to send the most appropriate help. All 9-1-1 calls in Alberta are assessed using the same triage criteria to determine patients’ level of urgency. Included in this chart are only those incidents triaged as life-threatening at the time of the 9-1-1 call.
Alberta is a large, geographically diverse province, where EMS response times will vary in relation to travel distances, and other subtleties unique to different areas of the province. To account for this, in the chart above, times are reported by four distinct geographic areas, based on the exact location of the life-threatening medical event:
For life-threatening events, AHS has set response time targets for each of the four geographical areas listed above. Within each area, targets have been set for both the median, and 90th percentile. For 90th percentile, this means 9 out of 10 patients waited less than this amount of time, and 1 out of 10 patients waited longer. For Median (50th percentile), this means 5 out of 10 patients waited less than this amount of time, and 5 out of 10 patients waited longer.
When there are differences between response times for the same geographic areas in different zones, or for the same geographic location and zone over many months, it is a flag to ask why. Whether response times are getting longer or shorter, this information can be used to start a conversation between patients, EMS staff, and Alberta Health Services about possible causes and opportunities for improvement.
This website has functionality that works best on a desktop screen. Some features of the interactive graphs do not work well on a mobile device.
Please note that this is a Health Quality Alberta website reporting historical information about the 16 busiest emergency departments in Alberta.
If you are looking for estimated current emergency department wait times
please go to this Alberta Health Services site.