Indicator Metadata

NameWait Times for Knee Replacement (Percentiles)
Short/Other Names

Not applicable

DescriptionThe number of days a patient waited, between the date when the patient and the appropriate physician agreed to a total knee replacement and the patient was ready to receive it, and the date the patient received a planned total knee replacement
Interpretation

50th percentile means a time period that typical patients have to wait to receive care.

90th percentile means that provinces could treat 90% of patients within that time period.

HSP Framework Dimension

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

Areas of Need

Getting Better

Geographic Coverage

All provinces

Reporting Level/Disaggregation

National, Province/Territory, Region

Indicator Results

http://waittimes.cihi.ca/All/knee

Identifying Information
NameWait Times for Knee Replacement (Percentiles)
Short/Other Names

Not applicable

Indicator Description and Calculation
DescriptionThe number of days a patient waited, between the date when the patient and the appropriate physician agreed to a total knee replacement and the patient was ready to receive it, and the date the patient received a planned total knee replacement
Calculation: Description

This indicator is calculated based on provincial and national wait time data for the first two quarters of the fiscal year (April–September).

Measures:

Wait times are obtained by calculating

1. The number of days that half the patients in the sample received the surgery and half are still waiting (50th percentile)

2. The number of days that 90% of patients in the sample received the surgery and 10% are still waiting (90th percentile)

Unit of Analysis: Client or patient

Calculation of all-Canada estimates:

All-Canada Median and 90th Percentile Waits

The national estimate for the 50th and 90th percentiles was calculated using a weighted average of provincial submissions. Weights were calculated using provincially submitted surgical volumes.

Calculation: Geographic Assignment

Place of service

Calculation: Type of Measurement

Number - 50th percentile, 90th percentile

Calculation: Adjustment Applied

None

Calculation: Method of Adjustment

Not applicable

Denominator

Description:
Not applicable

Numerator

Description:
1. The number of days that half the patients in the sample received the surgery and half are still waiting (50th percentile)

2. The number of days that 90% of patients in the sample received the surgery and 10% are still waiting (90th percentile)
Inclusions:
1. Age 18 and older

2. All total knee replacements (primary and revision); bilateral joint replacements count as a single wait

3. All priority levels
Exclusions:
1. Emergency cases

2. Knee resurfacing techniques

3. Days when patient was unavailable

Background, Interpretation and Benchmarks
Rationale

In 2004, Canada's first ministers agreed to work toward reducing wait times for five priority areas: cancer treatment, cardiac care, diagnostic imaging, joint replacement and sight restoration. CIHI was mandated to collect wait time information and monitor provincial progress in meeting benchmarks.

Many factors affect wait times, for example, availability of resources, efficiency of a particular facility, seasonal effects, volumes, patient choice, patient condition, follow-up care and/or treatment complexity.

This indicator can be used to help understand access to care and to know how provinces are performing in providing access to services.

Interpretation

50th percentile means a time period that typical patients have to wait to receive care.

90th percentile means that provinces could treat 90% of patients within that time period.

HSP Framework Dimension

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

Areas of Need

Getting Better

Targets/Benchmarks

Within 26 weeks (182 days)

References

Health Canada. A 10-Year Plan to Strengthen Health Care. Health Canada. http://www.hc-sc.gc.ca/hcs-sss/delivery-prestation/fptcollab/2004-fmm-rpm/index-eng.php. Updated September 16, 2004. Accessed June 7, 2013.

Availability of Data Sources and Results
Data Sources

Provincial Wait Times Registry, Data may come from various sources, depending on the province.

Available Data Years

Type of Year:
Fiscal
First Available Year:
2008
Last Available Year:
2016

Geographic Coverage

All provinces

Reporting Level/Disaggregation

National, Province/Territory, Region

Result Updates
Update Frequency

Every year

Indicator Results

Web Tool:
Wait Times
URL: http://waittimes.cihi.ca/All/knee

Updates

There may be some provincial exceptions to the standard methodology each year. For more information, visit the Wait Times website and view provincial exceptions (http://waittimes.cihi.ca/All/knee).

Quality Statement
Caveats and Limitations

Some provinces may have some exceptions and their methodology may be slightly different than the standard methodology. For more information, visit the Wait Times website and view provincial exceptions (http://waittimes.cihi.ca/All/knee).

Trending Issues

Since 2008, an increasing number of provinces have adapted to the standard methodology in order to increase the comparability of results. When comparing data for a particular province over time, attention should be given to the exceptions. For more information, visit the Wait Times website and view provincial exceptions (http://waittimes.cihi.ca/All/knee).

Comments

Not applicable