Name Age-Standardized Rate for Knee Replacements (All Types)
Short/Other Names

Knee Replacement Rate

Description

The age-standardized hospitalization rate for all knee replacement procedures performed on inpatients in acute care facilities (per 100,000 population age 20 and older).

Analysis reflects all knee replacement types: total knee replacement, unicompartmental knee replacement (medial, lateral or patellofemoral) and patella-only procedures.

Interpretation Does not apply to this measure (that is, there is no predefined preference for the measure score)
HSP Framework Dimension

Health System Inputs and Characteristics: Health system resources

Areas of Need

Not applicable

Geographic Coverage

All provinces/territories

Reporting Level/Disaggregation

National, Province/Territory

Latest Result Update Date

05/2014

Indicator Results

https://secure.cihi.ca/estore/productFamily.htm?pf=PFC2625&lang=en&media=0

Identifying Information
Name Age-Standardized Rate for Knee Replacements (All Types)
Short/Other Names

Knee Replacement Rate

Indicator Description and Calculation
Description

The age-standardized hospitalization rate for all knee replacement procedures performed on inpatients in acute care facilities (per 100,000 population age 20 and older).

Analysis reflects all knee replacement types: total knee replacement, unicompartmental knee replacement (medial, lateral or patellofemoral) and patella-only procedures.

Calculation: Description (Total number of knee replacement [all types] hospitalizations for persons age 20 and older ÷ Total mid-year population age 20 and older) × 100,000 (age-adjusted)
Calculation: Geographic Assignment

Place of residence

Calculation: Type of Measurement

Rate - Per 100,000

Calculation: Adjustment Applied

Age-adjusted

Calculation: Method of Adjustment

Direct Standardization
Standard Population:
Canada 1991

Denominator

Description:
Total mid-year population age 20 and older

Numerator

Description:
Total number of discharges for knee replacement procedures (all types) for inpatients age 20 and older

Unit of Analysis: Single admission

Inclusions:
1. Knee replacement procedures (all types) occurring during inpatient stay

CCI: 1.VG.53 and 1.VP.53
Data from 2008–2009 used version 2006 of ICD-10-CA/CCI; data from 2009–2010 to 2011–2012 used version 2009 of ICD-10-CA/CCI; and data from 2012–2013 onward uses version 2012.

Note: Rates are based on the total number of discharges for knee replacement procedures in a given year. Therefore, a patient who received a simultaneous bilateral knee replacement or underwent multiple knee replacement procedures within a single hospital admission would be counted only once.

2. Age at admission: 20 and older

3. Sex recorded as male or female

4. Admission to an acute care institution

5. Canadian resident

Exclusions:
1. Records with an invalid or unknown date of birth

2. Records with an invalid or unknown postal code/forward sortation area of residence

3. Knee replacement procedures (all types) that were abandoned after onset

Background, Interpretation and Benchmarks
Rationale

Knee replacement surgery has the potential to improve functional status, reduce pain and contribute to other gains in health-related quality of life. Over the past two decades, rates of knee replacement procedures have increased substantially. Wide inter-regional variation in joint replacement rates may be attributable to numerous factors, including the availability of services, provider practice patterns and patient preferences.

Interpretation

Does not apply to this measure (that is, there is no predefined preference for the measure score)

HSP Framework Dimension

Health System Inputs and Characteristics: Health system resources

Areas of Need

Not applicable

Targets/Benchmarks

Not applicable

References

Not applicable

Availability of Data Sources and Results
Data Sources

HMDB

Available Data Years

Type of Year:
Fiscal
First Available Year:
2008
Last Available Year:
2012

Geographic Coverage

All provinces/territories

Reporting Level/Disaggregation

National, Province/Territory

Result Updates
Update Frequency

Every year

Latest Result Update Date

05/2014

Indicator Results

Web Tool:
CIHI's eStore: CJRR 2014 Annual Report
URL: https://secure.cihi.ca/estore/productFamily.htm?pf=PFC2625&lang=en&media=0

Updates

Not applicable

Quality Statement
Caveats and Limitations

1. Due to small cell sizes, values reported from Yukon, the Northwest Territories and Nunavut are suppressed. However, their numbers are included in Canadian calculations.

2. Rates are based on the total number of discharges for knee replacement procedures in a given year. However, it is possible for a patient to undergo more than one knee replacement procedure in a single discharge.

3. Knee replacement procedures that were not performed in an acute care setting are not included in this indicator.

Trending Issues

Not applicable

Comments

Sex-specific age-standardardized hospitalization rates are also calculated at the national and provincial/territorial levels.