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    • Breast
      • Breast cancer screening
      • Screening in underserved populations
      • Breast cancer diagnosis wait time
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      • Stage distribution
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        • Breast cancer resections that are mastectomies
        • The use of breast-conserving surgery versus mastectomies for breast cancer resections
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        • Post-operative radiation therapy for stage I or II breast cancer patients
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      • Geographic variation in colorectal cancer risk
      • Screening in underserved populations
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      • Surgery
        • Removal and examination of 12 or more lymph nodes in colon resections
        • Resection rates for stage II or III rectal cancer, stage III colon cancer and stage II or IIIA non-small cell lung cancer patients
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        • Pre-operative radiation therapy for patients with stage II or III rectal cancer
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      • Five-year net survival by income quintile for several cancers in Canada
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      • Capture of stage
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      • Geographic variation in lung cancer risk
      • Resection rates for stage II or IIIA Non-snmall cell lung cancer patients
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      • PSA testing
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      • Capture of stage
      • Stage distribution
      • Prostate wait times for surgery
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      • Incidence & Mortality Rates
      • Five-year net survival by income quintile for several cancers in Canada
    • Cervical
      • Human papillomavirus (HPV) vaccination
      • Cervical cancer screening
      • Screening in underserved populations
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      • Incidence and mortality rates
    • Stage Distribution
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  • 1. Prevention
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  • Smoking prevalence
  • Smoking behaviours in current cancer patients
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  • Second-hand smoke exposure
  • Geographic variation in lung cancer risk
  • Alcohol consumption
  • Adult overweight and obesity
  • Active transportation
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  • Human papillomavirus (HPV) vaccination
  • Fruit and vegetable consumption
  • Geographic variation in colorectal cancer risk
  • Cervical cancer screening
  • Breast cancer screening
  • Colorectal cancer screening
  • PSA testing
  • Screening in underserved populations
  • Breast cancer diagnosis wait times
  • Colorectal cancer diagnosis wait times
  • Capture of stage
  • Stage distribution
  • Prostate risk profile
  • Surgery
  • Radiation therapy
  • Systemic therapy
  • Removal and examination of 12 or more lymph nodes in colon resections
  • Resection rates for stage II or III rectal cancer, stage III colon cancer and stage II or IIIA non-small cell lung cancer patients
  • The use of breast-conserving surgery versus mastectomies for breast cancer resections
  • Breast cancer resections that are mastectomies
  • High-risk, resource-intensive surgeries for esophageal, pancreatic, liver, lung and ovarian cancers in Canada
  • Prostate wait times for surgery
  • Radical prostatectomy: open versus laparoscopic surgery
  • Radiation therapy wait times
  • Radiation therapy utilization and capacity
  • Pre-operative radiation therapy for patients with stage II or III rectal cancer
  • Post-operative radiation therapy for patients with stage I or II breast cancer
  • Prostate wait times for radiation therapy
  • Prostate patterns of care: radiation and surgical treatment
  • Post-operative chemotherapy for stage III colon cancer patients
  • Post-operative chemotherapy for patients with stage II or IIIA non-small cell lung cancer
  • Screening for distress
  • Patient satisfaction
  • Place of death
  • Prostate access to palliative radiation
  • Adult clinical trial participation
  • Prostate clinical trials participation
  • Pediatric clinical trial participation
  • Cancer research investment
  • Prostate cancer research investment
  • Breast cancer screening outside of guidelines
  • Breast cancer mastectomies done as day surgery
  • Intensive care use in the last two weeks of life
  • Breast cancer
  • Lung cancer
  • Colorectal cancer
  • Prostate cancer
  • Pancreatic cancer
  • Five-year net survival by income quintile for several cancers in Canada
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  • Breast cancer resections that are mastectomies

Breast cancer resections that are mastectomies

  • Charts and Tables

    Charts and Tables

    Figure 4.23

    Percentage of breast cancer resections that are mastectomies, by province/territory - from 2008/2009 to 2012/2013 fiscal years combined

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    The mastectomy data include women who receive a mastectomy first (labeled Index) as well as women who receive breast conserving surgery first followed by a mastectomy within one year (labeled Final).
    Data source: Canadian Institute for Health Information, Hospital Morbidity Database, National Ambulatory Care Reporting System; Alberta Health and Wellness, Alberta Ambulatory Care Reporting System.

    Data Table

    Province/TerritoryType of ProcedureCases Percent (%)Lower bound of 95% confidence intervalUpper bound of 95% confidence interval
    BCIndex4,93537.436.638.3
    BCFinal5,96845.344.446.1
    ABIndex4,35548.347.349.4
    ABFinal4,77953.052.054.1
    SKIndex1,56756.454.658.3
    SKFinal1,76163.461.665.2
    MBIndex1,04830.729.132.3
    MBFinal1,23136.034.437.7
    ONIndex11,92531.931.532.4
    ONFinal13,60036.435.936.9
    QCIndex5,48020.920.421.4
    QCFinal6,64125.324.825.9
    NBIndex86437.535.539.5
    NBFinal1,02444.542.446.5
    NSIndex1,36644.843.146.6
    NSFinal1,55951.249.453.0
    PEIndex19743.338.748.0
    PEFinal22950.345.655.0
    NLIndex86154.251.756.7
    NLFinal1,08668.366.070.6
    TerritoriesIndex9549.041.756.2
    TerritoriesFinal11659.852.566.8

    + Expand Table

    The mastectomy data include women who receive a mastectomy first (labeled Index) as well as women who receive breast conserving surgery first followed by a mastectomy within one year (labeled Final).
    Data source: Canadian Institute for Health Information, Hospital Morbidity Database, National Ambulatory Care Reporting System; Alberta Health and Wellness, Alberta Ambulatory Care Reporting System.

  • Data specifications

    Data specifications

    Data and measurement considerations

    • Data for this indicator are based on hospital abstract databases maintained by the Canadian Institute for Health Information (CIHI) or data provided to CIHI. There was no linkage with data in provincial cancer registries. Thus data may include women with recurrent disease—although attempts to minimize this were made through the case selection criteria.
    • The data include women with unilateral invasive breast cancer whose surgery occurred between April 2008 and March 2013.
    • The procedure codes used do not differentiate between excisional biopsies and breast-conserving surgery. For this reason, patients who received excisional biopsy followed by mastectomy would have been grouped in the results with patients who received BCS first followed by mastectomy. Additionally, provinces with higher excisional biopsy rates compared to others may show a lower proportion of index mastectomies.
    • Definition: The percentage of surgical resections among women with unilateral invasive breast cancer that are mastectomies.
    • Numerator: Women in the denominator who received a mastectomy first as well as women who received breast conserving surgery (BCS) first followed by a mastectomy within one year
    • Denominator: Women with unilateral invasive breast cancer who received breast conserving surgery and/or a mastectomy
    • Data source: Hospital Morbidity Database, Canadian Institute for Health Information (CIHI); National Ambulatory Care Reporting System, CIHI; Fichier des hospitalisations MED-ÉCHO, ministère de la Santé et des Services  sociaux du Québec; Alberta Ambulatory Care Reporting  System, Alberta Health and Wellness
    • Measurement timeframe: 2007-08 to 2011-12
    • Stratification variables: Province/territory
    • Provinces submitting data: BC, AB, SK, MB, ON, QC, NB, NS, PE, NL and Territories
    • General notes:
      1. The following surgical and diagnostic  codes, as documented in hospital patient records and reported to CIHI, were used to identify diagnoses and procedures per the following:
    1. In order to identify a breast cancer diagnosis, the following ICD-10-CA codes were used: 00, C50.01, C50.09, C50.10, C50.11, C50.19, C50.20, C50.21, C50.29, C50.30, C50.31, C50.39, C50.40, C50.41, C50.49, C50.50, C50.51, C50.59, C50.60, C50.61,   C50.69, C50.80, C50.81, C50.89, C50.90, C50.91,  C50.99. Women with unilateral invasive breast cancer were the focus of this analysis (comprising 98% of women with invasive breast cancer).
    2. In order to identify a mastectomy, the following surgical codes were used according to CCI: 1.YM.89 to 1.YM.92.
    3. The following CCI codes were used to identify a breast conserving surgery: 1.YM.87, 1.YM.88.
  • Related indicators

    Related Indicators

    Breast cancer mastectomies done as day surgery

    Percentage of breast cancer mastectomies done as day surgery, provinces combined† —2008/09-2015/16 fiscal years
    View this indicator
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