Indicator Metadata

NameTotal Time Spent in Emergency Department (Hours, Percentile)
Short/Other Names

Not applicable

DescriptionThis indicator measures the time interval between the earlier of triage date/time or registration date/time and the date/time when a patient leaves the emergency department (ED).
Interpretation

The 90th or 50th percentile of this indicator represents the maximum length of time that 90% or 50% of patients spend in the ED.

A small number is desirable for this indicator.

HSP Framework Dimension

Health System Outputs: Access to comprehensive, high-quality health services

Areas of Need

Getting Better

Geographic Coverage

Prince Edward Island, Nova Scotia, Ontario, Manitoba, Saskatchewan, Alberta, British Columbia, Yukon

Reporting Level/Disaggregation

National, Province/Territory, Region, Facility, Corporation, Peer group

Indicator Results

https://www.cihi.ca/sites/default/files/document/nacrs-2016-2017-qs-static-table_en.xlsx

Identifying Information
NameTotal Time Spent in Emergency Department (Hours, Percentile)
Short/Other Names

Not applicable

Indicator Description and Calculation
DescriptionThis indicator measures the time interval between the earlier of triage date/time or registration date/time and the date/time when a patient leaves the emergency department (ED).
Calculation: Description

The indicator is measured in hours, usually using the 90th percentile and/or 50th percentile, which represents the maximum length of time that 90% and/or 50% of patients stay in the ED.

Unit of analysis: Single ED visit

Calculation: Geographic Assignment

Place of service

Calculation: Type of Measurement

Number - Number of hours, percentile

Calculation: Adjustment Applied

None

Calculation: Method of Adjustment

Not applicable

Denominator
Numerator

Description:
All emergency visits
Inclusions:
1. Unscheduled emergency visits

2. ED visits with a valid and known registration date/time or triage date/time and a valid and known date/time when a patient left the ED

Exclusions:
1. Scheduled emergency visits

2. ED Visits with Visit Disposition 02 (Left without being seen, not triaged)

3. Visits with both unknown/invalid registration and triage date/time OR with unknown/invalid patient left ED date/time

Background, Interpretation and Benchmarks
Rationale

Time is crucial to the effectiveness and outcome of patient care, especially for emergency patients. In conjunction with other indicators, this can be used to monitor the total length of time patients spend in the ED in an effort to improve the efficiency and, ultimately, the outcome of patient care.

Many factors can influence the indicator results, including the availability of inpatient beds, triage level, the overall patient population and hospital resources.

Interpretation

The 90th or 50th percentile of this indicator represents the maximum length of time that 90% or 50% of patients spend in the ED.

A small number is desirable for this indicator.

HSP Framework Dimension

Health System Outputs: Access to comprehensive, high-quality health services

Areas of Need

Getting Better

Targets/Benchmarks

Not applicable

References

Not applicable

Availability of Data Sources and Results
Data Sources

NACRS

Available Data Years

Type of Year:
Fiscal
First Available Year:
2012
Last Available Year:
2016

Geographic Coverage

Prince Edward Island, Nova Scotia, Ontario, Manitoba, Saskatchewan, Alberta, British Columbia, Yukon

Reporting Level/Disaggregation

National, Province/Territory, Region, Facility, Corporation, Peer group

Result Updates
Update Frequency

Every year

Indicator Results

Web Tool:
Quick Stats
URL: https://www.cihi.ca/sites/default/files/document/nacrs-2016-2017-qs-static-table_en.xlsx

Updates

Not applicable

Quality Statement
Caveats and Limitations

Not applicable

Trending Issues

Coverage in the National Ambulatory Care Reporting System (NACRS) changes over time as more jurisdictions participate.

For more information on NACRS coverage, please see the NACRS Quick Stats: https://www.cihi.ca/en/quick-stats.

Comments

2016–2017 results will be available as of November 30, 2017. Quick Stats results from the previous year can be found here: https://www.cihi.ca/sites/default/files/document/nacrs-2015-2016-qs-static-table_en.xlsx.

These static tables include both 50th and 90th percentiles at jurisdictional levels. Additional breakdowns based on the 90th percentile are provided by peer group, age and main problem.

Additional results based on the 50th percentile can be found in the interactive tables, and include breakdowns by main problem, triage level, visit disposition, age and sex: https://apps.cihi.ca/mstrapp/asp/Main.aspx?server=apmstrextprd_i.cihi.ca&project=Quick%20Stats&uid=pce_pub_en&pwd=&evt=2048001&visualizationMode=0&documentID=8A3FAB3E46D03C93AE5F82AD01FE74D9.

Depending on the acuity of the case or hospital procedures, triage may occur before registration or vice versa. Therefore, the earlier of these 2 events is used as the starting point for calculation of this indicator.

Indicator results are also available as of 2012 in Your Health System: Insight.