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Coronary Artery Bypass Graft (CABG) Rate

This indicator measures the age-standardized rate of coronary artery bypass graft (CABG) surgery performed on inpatients in acute care hospitals, per 100,000 population age 18 and older.
Data updated:
Data availability: to (fiscal years)
Geographic coverage
All provinces/territories
Reporting level
National, Province/Territory, Region
Calculation

(Total number of discharges for CABG for inpatients age 18 and older ÷ total mid-year population age 18 and older) × 100,000 (age adjusted)

Unit of Analysis: Single admission

Denominator

Total mid-year population age 18 and older

Numerator

Total number of discharges for CABG for inpatients age 18 and older

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Name

Coronary Artery Bypass Graft (CABG) Rate

Short/Other Names

CABG

Description

This indicator measures the age-standardized rate of coronary artery bypass graft (CABG) surgery performed on inpatients in acute care hospitals, per 100,000 population age 18 and older.

For further details, please see the General Methodology Notes (PDF).

Rationale

As with other types of surgical procedures, variation in CABG surgery rates can be attributed to numerous factors, including differences in population demographics, physician practice patterns and availability of services. In cases amenable to treatment with less-invasive procedures, percutaneous coronary intervention (PCI), an alternative intervention to improve blood flow to the heart muscle, may be used. Variations in the extent to which PCI is utilized may result in variations in the rate of bypass surgery.

HSP Framework Dimension

Health system inputs and characteristics: Health system resources

Areas of Need

Not applicable

Targets/Benchmarks

Benchmarks have not been identified for this indicator.

Available Data Years

to (fiscal years)

Geographic Coverage

  • All provinces/territories

Reporting Level/Disaggregation

  • National
  • Province/Territory
  • Region

Indicator Results

Web Tool:
Health Indicators e-Publication
 

Update Frequency

Every year

Latest Results Update Date

Updates

Not applicable

Description

(Total number of discharges for CABG for inpatients age 18 and older ÷ total mid-year population age 18 and older) × 100,000 (age adjusted)

Unit of Analysis: Single admission

Type of Measurement

Rate - Per 100,000

Denominator

Description:

Total mid-year population age 18 and older

Numerator

Description:

Total number of discharges for CABG for inpatients age 18 and older

Inclusions:

  1. CABG is identified as the following procedure code recorded in any position of the procedure code fields:
    CCP: 48.1^
    ICD-9-CM: 36.1
    CCI: 1.IJ.76^^
  2. Age at admission 18 years and older
  3. Sex recorded as male or female
  4. Admission to an acute care institution (Facility Type Code = 1)

Exclusions:

  1. Newborn, stillbirth or cadaveric donor records (Admission Category = N, R or S)
  2. CABG can be performed in designated cardiac centres only; therefore, procedures reported by facilities without on-site CABG services were excluded from the indicator calculation.
  3. Procedures coded as out of hospital and abandoned after onset (Intervention Status Attribute = A or OOH Indicator Flag = Y)
  4. 2018–2019 data onward: Discharges with medical assistance in dying (MAID) (Discharge Disposition Code = 73)

Method of Adjustment

Direct standardization

Standard Population:
Canada 2011

Adjustment Applied

Age-adjusted

Geographic Assignment

Place of residence

Data Sources

  • DAD
  • HMDB

Caveats and Limitations

Some residents in New Brunswick's Zone 4 and Zone 5 receive CABG in Quebec under a referral agreement between the 2 provinces. Due to differences in data collection, New Brunswick residents receiving care in Quebec cannot be assigned to their region of residence; thus the rates for these 2 regions are suppressed.

Trending Issues

Not applicable

Comments

CABG operations can be performed in designated cardiac centres only; therefore, procedures reported by facilities without on-site CABG services were excluded from the indicator calculation.

References

Cardiac Care Network of Ontario Consensus Panel on Target Setting. Final Report and Recommendations. 2004.

Conigliaro, J. et al. "Understanding Racial Variation in the Use of Coronary Revascularization Procedures: The Role of Clinical Factors." Archives of Internal Medicine 160 (2000): pp. 1329-1335.

Faris, P. D. et al. "Diagnostic Cardiac Catheterization and Revascularization Rates for Coronary Heart Disease." Canadian Journal of Cardiology 20 (2004): pp. 391-397.

Institute for Clinical Evaluative Sciences. Cardiovascular Health and Services in Ontario. Toronto, Ont.: ICES, 1999.

Yap, A. G. et al. "Coronary Artery Bypass Surgery on Small Patients." Journal of Invasive Cardiology 12 (2000): pp. 242-246.

How to cite:

Canadian Institute for Health Information. Coronary Artery Bypass Graft (CABG) Rate. Accessed April 25, 2025.