Emergency Room Information


The Emergency Room National Ambulatory Initiative (ERNI) helps measure and report on how long patients spend in emergency rooms. Ninety-two facilities across the province collect and submit ER data, which is publicly reported on the Ministry of Health and Long-Term Care's website.

What we do with ER data

The data we collect enable hospitals and other healthcare stakeholders to:

  • monitor the impact of policy changes and investments over time
  • review trends to support planning and target funding
  • better inform medium and long-term decision making
  • gain a more timely understanding of the impact of policy changes and investments
  • identify process bottlenecks within hospital ERs

Electronic system reduces burden on hospitals

The Emergency Room and Alternate Level of Care Information Strategy includes streamlining emergency room data submission and enabling linkages to other data sets. To address this, we partnered with the Canadian Institute for Health Information to use the National Ambulatory Care Reporting System for the timely collection of ER wait time data. This replaced the Emergency Department Reporting System and led to more timely and actionable information, while reducing the data collection burden on hospitals.

Access to Care

Success Stories

Impact on Patient Flow

The William Osler Health System improves emergency room wait times despite increasing volumes at the Brampton Civic Hospital.
Read more

Bed Flow Coordinators

New role helps reduce emergency room wait times and overcrowding at Markham Stouffville Hospital.
Read more


Do you have examples of how your organization has effectively used ATC data to drive performance improvement approaches? If so, tell us all about them.