Data tables for the monitoring and evaluation of breast cancer screening quality indicators report

Access the description, data tables and footnotes for the following pages:

Key statistics on breast cancer screening in Canada

Infographic: The burden of breast cancer for females in Canada

This infographic on the monitoring and evaluation of breast cancer screening quality indicators report shows key statistics about breast cancer in Canada from 2023:

  • Breast cancer is the number one cancer diagnosed in females in Canada and the second leading cause of cancer death among females in Canada.
  • It is estimated that in 2023, 80 females will be diagnosed with breast cancer every day (29,400 total) and 15 females will die from breast cancer every day (5,400 total).
  • The lifetime probability of developing breast cancer in females is 13%.
  • The lifetime probability of dying from breast cancer is 2.8%.

Data source: Canadian Cancer Statistics 2023

Age-standardized rate for incidence and mortality for breast cancer (female), Canada, 1990 to 2022

Year Incidence Mortality
1990 127.2 41.6
1991 133.9 40.1
1992 134.8 40.6
1993 130.3 39.0
1994 129.4 40.1
1995 129.1 38.5
1996 128.9 38.7
1997 134.9 36.9
1998 133.0 35.7
1999 136.5 34.0
2000 129.9 33.9
2001 128.8 33.8
2002 133.3 33.0
2003 125.0 32.8
2004 125.4 31.3
2005 126.6 30.7
2006 126.0 29.1
2007 126.8 29.6
2008 123.9 28.3
2009 126.9 27.5
2010 131.1 27.0
2011 131.5 26.3
2012 126.9 25.8
2013 126.6 25.2
2014 127.8 25.3
2015 127.4 24.9
2016 128.5 25.0
2017 126.9 24.6
2018 129.2 23.7
2019 130.6 23.2
2020 129.3 22.5
2021 129.5 22.8
2022 129.7 22.4
2023 129.9 22.1

Footnotes

For the age-standardized incidence rate:

  • Quebec was excluded for all years. Estimates for 2019 exclude Nova Scotia.
  • Rates are age-standardized to the 2011 Canadian standard population. Actual incidence data was available until 2019 in each province and territory except Nova Scotia and Quebec. Estimates for 2020 to 2022 are projected.

For the age-standardized mortality rate:

  • Actual mortality data was available until 2020 for all provinces and territories except Yukon, for which data was available to 2016 and inputted from 2017 to 2020.
  • Rates are age-standardized to the 2011 Canadian standard population. Estimates for 2021 and 2022 were projected based on data up to 2020.

Data source: Canadian Cancer Statistics 2023

Impact of the COVID-19 pandemic on breast cancer screening

Percentage of change in individuals screened within 12 months for those aged 50-74 between the pre-pandemic and pandemic era (2019 vs 2020), by jurisdiction

Jurisdiction Percent change (%)
Jurisdictions combined -35.7
British Columbia -29.5
Alberta -24.8
Saskatchewan -45.1
Manitoba -38.7
Ontario -44.0
New Brunswick -33.9
Nova Scotia Data not available
Prince Edward Island -15.6
Newfoundland and Labrador -35.2
Northwest Territories -19.5

Footnotes

  • Number of screens in 2019 (pre-) and 2020 (pandemic era), for age 50-74 were extracted from the abnormal call rate.
  • Jurisdictions combined: data included BC, AB, SK, MB, ON, QC, NB, PE, NL and NT.
  • SK: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited.
  • MB: Differences observed may also be attributed to operational changes and limitations that were seen in this reporting period.
  • QC: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited.
  • NB: Data for 2020 was incomplete.

Data source: Provincial and territorial breast cancer screening programs

Participation rate

Breast cancer screening participation among individuals aged 50-74, who were screened within a screening mammography program, by jurisdiction and screening period (2018-19 and 2020-21)

Jurisdiction Year Percent (%)
British Columbia 2018-19 49.0
British Columbia 2020-21 46.3
Alberta 2018-19 57.4
Alberta 2020-21 50.9
Saskatchewan 2018-19 39.9
Saskatchewan 2020-21 28.4
Manitoba 2020-21 46.7
Manitoba 2018-19 43.1
Ontario 2018-19 59.1
Ontario 2020-21 54.9
Quebec* 2018-19 65.6
Quebec* 2019-20 59.7
New Brunswick 2018-19 52.6
New Brunswick 2020-21 39.1
Nova Scotia 2018-19 Data not available
Nova Scotia 2020-21 Data not available
Prince Edward Island 2018-19 53.6
Prince Edward Island 2020-21 52.2
Newfoundland and Labrador 2018-19 35.0
Newfoundland and Labrador 2020-21 Data not available
Northwest Territories 2018-19 42.8
Northwest Territories 2020-21 49.5

Footnotes

  • Data cited as 2018-19 included screens from January 2018 to June 2020 and data cited as 2020-21 included screens from January 2020 to June 2022. For QC*, data cited as 2018-19 included screens from July 2017 to December 2019 and data cited as 2020-21 included screens from July 2018 to December 2020.
  • SK: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited.
  • MB: Provincial participation was underestimated (by approximately 10-15%), as data reflected BreastCheck program screening mammograms only and did not include screening mammograms done outside of the BreastCheck program.
  • QC*: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited. Data for 2020-21 refers to data from 2019-20.
  • NB: The results for the period 2020-21 were underestimated since the data was incomplete.

Data source: Provincial and territorial breast cancer screening programs

Breast cancer screening participation among individuals aged 50-74, who were screened within a screening mammography program, by jurisdiction and age group (2018-19 and 2020-21)

Jurisdiction Year Age group Percent (%)
British Columbia 2018-19 50-59 44.8
British Columbia 2018-19 60-69 52.3
British Columbia 2018-19 70-74 52.3
Alberta 2018-19 50-59 55.0
Alberta 2018-19 60-69 60.2
Alberta 2018-19 70-74 57.6
Saskatchewan 2018-19 50-59 37.1
Saskatchewan 2018-19 60-69 43.1
Saskatchewan 2018-19 70-74 Data not available
Manitoba 2018-19 50-59 44.7
Manitoba 2018-19 60-69 50.4
Manitoba 2018-19 70-74 42.6
Ontario 2018-19 50-59 56.8
Ontario 2018-19 60-69 63.0
Ontario 2018-19 70-74 56.4
Quebec 2018-19 50-59 Data not available
Quebec 2018-19 60-69 Data not available
Quebec 2018-19 70-74 Data not available
New Brunswick 2018-19 50-59 48.5
New Brunswick 2018-19 60-69 56.7
New Brunswick 2018-19 70-74 52.9
Nova Scotia 2018-19 50-59 Data not available
Nova Scotia 2018-19 60-69 Data not available
Nova Scotia 2018-19 70-74 Data not available
Prince Edward Island 2018-19 50-59 48.5
Prince Edward Island 2018-19 60-69 56.8
Prince Edward Island 2018-19 70-74 58.9
Newfoundland and Labrador 2018-19 50-59 32.0
Newfoundland and Labrador 2018-19 60-69 37.1
Newfoundland and Labrador 2018-19 70-74 37.9
Northwest Territories 2018-19 50-59 47.3
Northwest Territories 2018-19 60-69 40.0
Northwest Territories 2018-19 70-74 29.6
British Columbia 2020-21 50-59 42.5
British Columbia 2020-21 60-69 49.2
British Columbia 2020-21 70-74 48.8
Alberta 2020-21 50-59 48.5
Alberta 2020-21 60-69 53.6
Alberta 2020-21 70-74 51.1
Saskatchewan 2020-21 50-59 24.9
Saskatchewan 2020-21 60-69 32.0
Saskatchewan 2020-21 70-74 Data not available
Manitoba 2020-21 50-59 40.1
Manitoba 2020-21 60-69 45.9
Manitoba 2020-21 70-74 43.7
Ontario 2020-21 50-59 53.0
Ontario 2020-21 60-69 58.4
Ontario 2020-21 70-74 51.6
Quebec 2020-21 50-59 Data not available
Quebec 2020-21 60-69 Data not available
Quebec 2020-21 70-74 Data not available
New Brunswick 2020-21 50-59 39.2
New Brunswick 2020-21 60-69 42.1
New Brunswick 2020-21 70-74 31.4
Nova Scotia 2020-21 50-59 Data not available
Nova Scotia 2020-21 60-69 Data not available
Nova Scotia 2020-21 70-74 Data not available
Prince Edward Island 2020-21 50-59 47.3
Prince Edward Island 2020-21 60-69 56.2
Prince Edward Island 2020-21 70-74 54.5
Newfoundland and Labrador 2020-21 50-59 Data not available
Newfoundland and Labrador 2020-21 60-69 Data not available
Newfoundland and Labrador 2020-21 70-74 Data not available
Northwest Territories 2020-21 50-59 44.5
Northwest Territories 2020-21 60-69 58.0
Northwest Territories 2020-21 70-74 54.5

Footnotes

  • SK: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited.
  • MB: Provincial participation was underestimated (by approximately 10-15%), as data reflected BreastCheck program screening mammograms only and did not include screening mammograms done outside of the BreastCheck program.
  • NB: The result for the period 2020-21 was underestimated since the data was incomplete.

Data source: Provincial and Territorial Breast Cancer Screening Programs.

Abnormal call rate

Abnormal call rate among individuals aged 50-74, who were screened within a screening mammography program, by jurisdiction — 2019 and 2020

Jurisdiction Year Percent (%)
British Columbia 2019 7.9
British Columbia 2020 7.8
Alberta 2019 7.4
Alberta 2020 7.0
Saskatchewan 2019 6.0
Saskatchewan 2020 7.3
Manitoba 2019 4.6
Manitoba 2020 4.8
Ontario 2019 8.7
Ontario 2020 9.4
Quebec 2019 10.8
Quebec 2020 10.4
New Brunswick 2019 7.9
New Brunswick 2020 7.4
Nova Scotia 2019 5.8
Nova Scotia 2020 Data not available
Prince Edward Island 2019 8.5
Prince Edward Island 2020 10.1
Newfoundland and Labrador 2019 5.5
Newfoundland and Labrador 2020 Data not available
Northwest Territories 2019 7.3
Northwest Territories 2020 4.9

Footnotes

  • SK: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited.
  • QC: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited.

Data source: Provincial and territorial breast cancer screening programs

Abnormal call rate among individuals aged 50-74, who were screened within a screening mammography program, by jurisdiction and age group — 2019 and 2020

Jurisdiction Year Age group Percent (%)
British Columbia 2019 50-59 8.7
British Columbia 2019 60-69 7.4
British Columbia 2019 70-74 7.1
Alberta 2019 50-59 8.0
Alberta 2019 60-69 6.8
Alberta 2019 70-74 6.9
Saskatchewan 2019 50-59 6.9
Saskatchewan 2019 60-69 5.2
Saskatchewan 2019 70-74 Data not available
Manitoba 2019 50-59 5.7
Manitoba 2019 60-69 3.8
Manitoba 2019 70-74 3.7
Ontario 2019 50-59 10.3
Ontario 2019 60-69 7.6
Ontario 2019 70-74 7.4
Quebec 2019 50-59 Data not available
Quebec 2019 60-69 Data not available
Quebec 2019 70-74 Data not available
New Brunswick 2019 50-59 9.0
New Brunswick 2019 60-69 7.0
New Brunswick 2019 70-74 7.3
Nova Scotia 2019 50-59 Data not available
Nova Scotia 2019 60-69 Data not available
Nova Scotia 2019 70-74 Data not available
Prince Edward Island 2019 50-59 9.5
Prince Edward Island 2019 60-69 7.8
Prince Edward Island 2019 70-74 8.2
Newfoundland and Labrador 2019 50-59 6.2
Newfoundland and Labrador 2019 60-69 5.1
Newfoundland and Labrador 2019 70-74 4.9
Northwest Territories 2019 50-59 9.1
Northwest Territories 2019 60-69 6.2
Northwest Territories 2019 70-74 6.8
British Columbia 2020 50-59 8.7
British Columbia 2020 60-69 7.2
British Columbia 2020 70-74 7.1
Alberta 2020 50-59 7.7
Alberta 2020 60-69 6.5
Alberta 2020 70-74 6.3
Saskatchewan 2020 50-59 8.1
Saskatchewan 2020 60-69 6.6
Saskatchewan 2020 70-74 Data not available
Manitoba 2020 50-59 6.2
Manitoba 2020 60-69 3.7
Manitoba 2020 70-74 3.9
Ontario 2020 50-59 11.0
Ontario 2020 60-69 8.2
Ontario 2020 70-74 7.9
Quebec 2020 50-59 Data not available
Quebec 2020 60-69 Data not available
Quebec 2020 70-74 Data not available
New Brunswick 2020 50-59 8.0
New Brunswick 2020 60-69 7.1
New Brunswick 2020 70-74 6.7
Nova Scotia 2020 50-59 Data not available
Nova Scotia 2020 60-69 Data not available
Nova Scotia 2020 70-74 Data not available
Prince Edward Island 2020 50-59 10.0
Prince Edward Island 2020 60-69 9.9
Prince Edward Island 2020 70-74 10.7
Newfoundland and Labrador 2020 50-59 Data not available
Newfoundland and Labrador 2020 60-69 Data not available
Newfoundland and Labrador 2020 70-74 Data not available
Northwest Territories 2020 50-59 5.0
Northwest Territories 2020 60-69 3.2
Northwest Territories 2020 70-74 8.0

Footnotes

  • SK: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited.

Data source: Provincial and territorial breast cancer screening programs

Abnormal call rate among individuals aged 50-74, who were screened within a screening mammography program, by jurisdiction and screening sequence — 2019 and 2020

Jurisdiction Year Screening sequence Percent (%)
British Columbia 2019 Initial screens 20.8
British Columbia 2019 Screens >9 to 18 months 7.2
British Columbia 2019 Screens >18 to 30 months Data not available
British Columbia 2019 Screens >30 months Data not available
Alberta 2019 Initial screens 18.9
Alberta 2019 Screens >9 to 18 months 5.8
Alberta 2019 Screens >18 to 30 months 5.8
Alberta 2019 Screens >30 months 8.5
Saskatchewan 2019 Initial screens 12.9
Saskatchewan 2019 Screens >9 to 18 months 4.9
Saskatchewan 2019 Screens >18 to 30 months Data not available
Saskatchewan 2019 Screens >30 months Data not available
Manitoba 2019 Initial screens 11.7
Manitoba 2019 Screens >9 to 18 months 3.5
Manitoba 2019 Screens >18 to 30 months Data not available
Manitoba 2019 Screens >30 months Data not available
Ontario 2019 Initial screens 16.6
Ontario 2019 Screens >9 to 18 months 7.1
Ontario 2019 Screens >18 to 30 months Data not available
Ontario 2019 Screens >30 months Data not available
Quebec 2019 Initial screens 22.8
Quebec 2019 Screens >9 to 18 months 8.8
Quebec 2019 Screens >18 to 30 months Data not available
Quebec 2019 Screens >30 months Data not available
New Brunswick 2019 Initial screens 16.1
New Brunswick 2019 Screens >9 to 18 months 9.5
New Brunswick 2019 Screens >18 to 30 months 9.1
New Brunswick 2019 Screens >30 months 6.7
Nova Scotia 2019 Initial screens 15.2
Nova Scotia 2019 Screens >9 to 18 months 5.3
Nova Scotia 2019 Screens >18 to 30 months Data not available
Nova Scotia 2019 Screens >30 months Data not available
Prince Edward Island 2019 Initial screens 17.0
Prince Edward Island 2019 Screens >9 to 18 months 7.7
Prince Edward Island 2019 Screens >18 to 30 months 7.3
Prince Edward Island 2019 Screens >30 months 10.5
Newfoundland and Labrador 2019 Initial screens 11.3
Newfoundland and Labrador 2019 Screens >9 to 18 months 4.7
Newfoundland and Labrador 2019 Screens >18 to 30 months Data not available
Newfoundland and Labrador 2019 Screens >30 months Data not available
Northwest Territories 2019 Initial screens Data not available
Northwest Territories 2019 Screens >9 to 18 months Data not available
Northwest Territories 2019 Screens >18 to 30 months Data not available
Northwest Territories 2019 Screens >30 months Data not available
British Columbia 2020 Initial screens 20.4
British Columbia 2020 Screens >9 to 18 months 7.2
British Columbia 2020 Screens >18 to 30 months Data not available
British Columbia 2020 Screens >30 months Data not available
Alberta 2020 Initial screens 19.4
Alberta 2020 Screens >9 to 18 months 5.6
Alberta 2020 Screens >18 to 30 months 5.7
Alberta 2020 Screens >30 months 8.0
Saskatchewan 2020 Initial screens 14.1
Saskatchewan 2020 Screens >9 to 18 months 6.4
Saskatchewan 2020 Screens >18 to 30 months Data not available
Saskatchewan 2020 Screens >30 months Data not available
Manitoba 2020 Initial screens 11.6
Manitoba 2020 Screens >9 to 18 months 3.7
Manitoba 2020 Screens >18 to 30 months Data not available
Manitoba 2020 Screens >30 months Data not available
Ontario 2020 Initial screens 17.6
Ontario 2020 Screens >9 to 18 months 7.8
Ontario 2020 Screens >18 to 30 months Data not available
Ontario 2020 Screens >30 months Data not available
Quebec 2020 Initial screens 21.9
Quebec 2020 Screens >9 to 18 months 9.0
Quebec 2020 Screens >18 to 30 months Data not available
Quebec 2020 Screens >30 months Data not available
New Brunswick 2020 Initial screens 16.6
New Brunswick 2020 Screens >9 to 18 months 6.7
New Brunswick 2020 Screens >18 to 30 months 7.3
New Brunswick 2020 Screens >30 months 6.2
Nova Scotia 2020 Initial screens Data not available
Nova Scotia 2020 Screens >9 to 18 months Data not available
Nova Scotia 2020 Screens >18 to 30 months Data not available
Nova Scotia 2020 Screens >30 months Data not available
Prince Edward Island 2020 Initial screens 17.7
Prince Edward Island 2020 Screens >9 to 18 months 9.1
Prince Edward Island 2020 Screens >18 to 30 months 9.6
Prince Edward Island 2020 Screens >30 months 10.4
Newfoundland and Labrador 2020 Initial screens Data not available
Newfoundland and Labrador 2020 Screens >9 to 18 months Data not available
Newfoundland and Labrador 2020 Screens >18 to 30 months Data not available
Newfoundland and Labrador 2020 Screens >30 months Data not available
Northwest Territories 2020 Initial screens Data not available
Northwest Territories 2020 Screens >9 to 18 months Data not available
Northwest Territories 2020 Screens >18 to 30 months Data not available
Northwest Territories 2020 Screens >30 months Data not available

Footnotes

  • SK: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited.
  • QC: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited. Not able to break down the subsequent screens by the specified month interval.  All the subsequent screens were combined and presented as “screens >9 to 18 months”. Subsequent screens in the PQDCS are defined as screens ≥11 months.
  • BC, SK, MB, ON, NS and NL were not able to break down the subsequent screens by the specified month interval. All the subsequent screens were combined and presented as “screens >9 to 18 months”.

Data source: Provincial breast cancer screening programs

Positive predictive value

Percentage of individuals (aged 50-74) with abnormal mammograms who were diagnosed with breast cancer, by jurisdiction – 2019 and 2020

Jurisdiction Year Percent (%)
British Columbia 2019 7.8
British Columbia 2020 7.6
Alberta 2019 8.1
Alberta 2020 8.7
Saskatchewan 2019 9.7
Saskatchewan 2020 7.9
Manitoba 2019 13.4
Manitoba 2020 11.8
Ontario 2019 6.9
Ontario 2020 6.8
Quebec 2019 6.0
Quebec 2020 6.3
New Brunswick 2019 4.8
New Brunswick 2020 7.4
Nova Scotia 2019 9.8
Nova Scotia 2020 Data not available
Prince Edward Island 2019 6.0
Prince Edward Island 2020 5.8
Newfoundland and Labrador 2019 10.2
Newfoundland and Labrador 2020 Data not available
Northwest Territories 2019 Suppressed due to small number
Northwest Territories 2020 Data not available

Footnotes

  • SK: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited. Screens that were lost to follow-up within 6 months of screening were not excluded.
  • ON: Abnormal screens that were lost to follow-up were excluded, regardless of the 6-month period.
  • QC: Data included individuals aged 50-69.
  • NS, NL: Screens that were lost to follow-up within 6 months of screening were not excluded.

Data source: Provincial breast cancer screening program.

Percentage of individuals (aged 50-74) with abnormal mammograms who were diagnosed with breast cancer, by jurisdiction and age group – 2019 and 2020

Jurisdiction Year Age group Percent (%)
British Columbia 2019 50-59 5.9
British Columbia 2019 60-69 8.4
British Columbia 2019 70-74 12.0
Alberta 2019 50-59 5.6
Alberta 2019 60-69 9.3
Alberta 2019 70-74 15.0
Saskatchewan 2019 50-59 5.6
Saskatchewan 2019 60-69 14.3
Saskatchewan 2019 70-74 Data not available
Manitoba 2019 50-59 7.5
Manitoba 2019 60-69 18.7
Manitoba 2019 70-74 22.6
Ontario 2019 50-59 4.4
Ontario 2019 60-69 9.0
Ontario 2019 70-74 11.9
Quebec 2019 50-59 Data not available
Quebec 2019 60-69 Data not available
Quebec 2019 70-74 Data not available
New Brunswick 2019 50-59 3.1
New Brunswick 2019 60-69 5.5
New Brunswick 2019 70-74 8.5
Nova Scotia 2019 50-59 Data not available
Nova Scotia 2019 60-69 Data not available
Nova Scotia 2019 70-74 Data not available
Prince Edward Island 2019 50-59 2.0
Prince Edward Island 2019 60-69 9.6
Prince Edward Island 2019 70-74 7.8
Newfoundland and Labrador 2019 50-59 8.1
Newfoundland and Labrador 2019 60-69 10.8
Newfoundland and Labrador 2019 70-74 14.7
Northwest Territories 2019 50-59 0.0
Northwest Territories 2019 60-69 Suppressed due to small number
Northwest Territories 2019 70-74 0.0
British Columbia 2020 50-59 4.7
British Columbia 2020 60-69 9.0
British Columbia 2020 70-74 11.9
Alberta 2020 50-59 5.5
Alberta 2020 60-69 10.9
Alberta 2020 70-74 14.9
Saskatchewan 2020 50-59 4.9
Saskatchewan 2020 60-69 10.9
Saskatchewan 2020 70-74 Data not available
Manitoba 2020 50-59 7.4
Manitoba 2020 60-69 15.1
Manitoba 2020 70-74 22.2
Ontario 2020 50-59 4.4
Ontario 2020 60-69 8.8
Ontario 2020 70-74 11.5
Quebec 2020 50-59 Data not available
Quebec 2020 60-69 Data not available
Quebec 2020 70-74 Data not available
New Brunswick 2020 50-59 4.8
New Brunswick 2020 60-69 8.9
New Brunswick 2020 70-74 10.7
Nova Scotia 2020 50-59 Data not available
Nova Scotia 2020 60-69 Data not available
Nova Scotia 2020 70-74 Data not available
Prince Edward Island 2020 50-59 4.2
Prince Edward Island 2020 60-69 5.9
Prince Edward Island 2020 70-74 8.6
Newfoundland and Labrador 2020 50-59 Data not available
Newfoundland and Labrador 2020 60-69 Data not available
Newfoundland and Labrador 2020 70-74 Data not available
Northwest Territories 2020 50-59 Data not available
Northwest Territories 2020 60-69 Data not available
Northwest Territories 2020 70-74 Data not available

Footnotes

  • SK: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited. Screens that were lost to follow-up within 6 months of screening were not excluded.
  • NS, NL: Screens that were lost to follow-up within 6 months of screening were not excluded.
  • ON: Abnormal screens that were lost to follow-up were excluded, regardless of the 6-month period.

Data source: Provincial breast cancer screening program

Percentage of individuals (aged 50-74) with abnormal mammograms who were diagnosed with breast cancer, by jurisdiction and screening sequence – 2019 and 2020

Jurisdiction Screening sequence Year Percent (%)
British Columbia Initial screens 2019 5.2
British Columbia Initial screens 2020 5.3
Alberta Initial screens 2019 5.3
Alberta Initial screens 2020 3.9
Saskatchewan Initial screens 2019 4.8
Saskatchewan Initial screens 2020 4.8
Manitoba Initial screens 2019 7.5
Manitoba Initial screens 2020 6.1
Ontario Initial screens 2019 4.4
Ontario Initial screens 2020 4.2
Quebec Initial screens 2019 3.8
Quebec Initial screens 2020 4.1
New Brunswick Initial screens 2019 4.7
New Brunswick Initial screens 2020 5.3
Nova Scotia Initial screens 2019 9.9
Nova Scotia Initial screens 2020 Data not available
Prince Edward Island Initial screens 2019 Suppressed due to small number
Prince Edward Island Initial screens 2020 5.6
Newfoundland and Labrador Initial screens 2019 9.3
Newfoundland and Labrador Initial screens 2020 Data not available
Northwest Territories Initial screens 2019 Suppressed due to small number
Newfoundland and Labrador Initial screens 2020 Data not available
British Columbia Subsequent screens 2019 8.2
British Columbia Subsequent screens 2020 7.9
Alberta Subsequent screens 2019 8.6
Alberta Subsequent screens 2020 9.4
Saskatchewan Subsequent screens 2019 11.7
Saskatchewan Subsequent screens 2020 8.8
Manitoba Subsequent screens 2019 16.8
Manitoba Subsequent screens 2020 15.3
Ontario Subsequent screens 2019 8.1
Ontario Subsequent screens 2020 7.9
Quebec Subsequent screens 2019 7.0
Quebec Subsequent screens 2020 7.0
New Brunswick Subsequent screens 2019 4.8
New Brunswick Subsequent screens 2020 8.1
Nova Scotia Subsequent screens 2019 9.8
Nova Scotia Subsequent screens 2020 Data not available
Prince Edward Island Subsequent screens 2019 Suppressed due to small number
Prince Edward Island Subsequent screens 2020 5.8
Newfoundland and Labrador Subsequent screens 2019 10.5
Newfoundland and Labrador Subsequent screens 2020 Data not available
Northwest Territories Subsequent screens 2019 Suppressed due to small number
Northwest Territories Subsequent screens 2020 Data not available

Footnotes

  • SK: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited. Screens that were lost to follow-up within 6 months of screening were not excluded.
  • NS, NL: Screens that were lost to follow-up within 6 months of screening were not excluded.
  • ON: Abnormal screens that were lost to follow-up were excluded, regardless of the 6-month period.
  • QC: Data included individuals aged 50-69.

Data source: Provincial breast cancer screening program

Cancer detection rate

Cancer detection rate (per 1,000 screens) of breast cancers among individuals aged 50-74, who were screened within a screening mammography program, by jurisdiction — 2019 and 2020

Jurisdiction Year Rate (per 1,000)
British Columbia 2019 6.1
British Columbia 2020 5.9
Alberta 2019 5.9
Alberta 2020 6.0
Saskatchewan 2019 5.8
Saskatchewan 2020 5.7
Manitoba 2019 6.0
Manitoba 2020 5.5
Ontario 2019 6.0
Ontario 2020 6.3
Quebec 2019 6.5
Quebec 2020 6.6
New Brunswick 2019 3.6
New Brunswick 2020 5.3
Nova Scotia 2019 5.7
Nova Scotia 2020 Data not available
Prince Edward Island 2019 5.1
Prince Edward Island 2020 5.8
Newfoundland and Labrador 2019 5.6
Newfoundland and Labrador 2020 Data not available
Northwest Territories 2019 Suppressed due to small number
Northwest Territories 2020 Data not available

Footnotes

  • SK: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited. Screens that were lost to follow-up within 6 months of screening were not excluded.
  • ON: Abnormal screens that were lost to follow-up were excluded, regardless of the 6-month period.
  • QC: Data included individuals aged 50-69. Cancer includes in-situ, invasive and unspecified breast cancers.
  • NB, NS and NL: Screens that were lost to follow-up within 6 months of screening were not excluded.

Data source: Provincial breast cancer screening program

Cancer detection rate (per 1,000 screens) of breast cancers among individuals aged 50-74, who were screened within a screening mammography program, by jurisdiction and age group — 2019 to 2020

Jurisdiction Year Age group Rate (per 1,000)
British Columbia 2019 50-59 5.1
British Columbia 2019 60-69 6.2
British Columbia 2019 70-74 8.5
Alberta 2019 50-59 4.4
Alberta 2019 60-69 6.3
Alberta 2019 70-74 10.2
Saskatchewan 2019 50-59 3.9
Saskatchewan 2019 60-69 7.5
Saskatchewan 2019 70-74 Data not available
Manitoba 2019 50-59 4.2
Manitoba 2019 60-69 7.0
Manitoba 2019 70-74 8.2
Ontario 2019 50-59 4.4
Ontario 2019 60-69 6.7
Ontario 2019 70-74 8.7
Quebec 2019 50-59 Data not available
Quebec 2019 60-69 Data not available
Quebec 2019 70-74 Data not available
New Brunswick 2019 50-59 2.7
New Brunswick 2019 60-69 3.7
New Brunswick 2019 70-74 5.9
Nova Scotia 2019 50-59 Data not available
Nova Scotia 2019 60-69 Data not available
Nova Scotia 2019 70-74 Data not available
Prince Edward Island 2019 50-59 1.9
Prince Edward Island 2019 60-69 7.5
Prince Edward Island 2019 70-74 6.3
Newfoundland and Labrador 2019 50-59 5.0
Newfoundland and Labrador 2019 60-69 5.5
Newfoundland and Labrador 2019 70-74 7.2
Northwest Territories 2019 50-59 0.0
Northwest Territories 2019 60-69 Suppressed due to small number
Northwest Territories 2019 70-74 0.0
British Columbia 2020 50-59 4.1
British Columbia 2020 60-69 6.5
British Columbia 2020 70-74 8.4
Alberta 2020 50-59 4.2
Alberta 2020 60-69 7.0
Alberta 2020 70-74 9.3
Saskatchewan 2020 50-59 4.0
Saskatchewan 2020 60-69 7.2
Saskatchewan 2020 70-74 Data not available
Manitoba 2020 50-59 4.5
Manitoba 2020 60-69 5.4
Manitoba 2020 70-74 8.4
Ontario 2020 50-59 4.8
Ontario 2020 60-69 7.2
Ontario 2020 70-74 8.9
Quebec 2020 50-59 Data not available
Quebec 2020 60-69 Data not available
Quebec 2020 70-74 Data not available
New Brunswick 2020 50-59 3.8
New Brunswick 2020 60-69 6.1
New Brunswick 2020 70-74 6.9
Nova Scotia 2020 50-59 Data not available
Nova Scotia 2020 60-69 Data not available
Nova Scotia 2020 70-74 Data not available
Prince Edward Island 2020 50-59 4.2
Prince Edward Island 2020 60-69 5.7
Prince Edward Island 2020 70-74 9.1
Newfoundland and Labrador 2020 50-59 Data not available
Newfoundland and Labrador 2020 60-69 Data not available
Newfoundland and Labrador 2020 70-74 Data not available
Northwest Territories 2020 50-59 Data not available
Northwest Territories 2020 60-69 Data not available
Northwest Territories 2020 70-74 Data not available

Footnotes

  • SK: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited. Screens that were lost to follow-up within 6 months of screening were not excluded.
  • ON: Abnormal screens that were lost to follow-up were excluded, regardless of the 6-month period.
  • NB, NS and NL: Screens that were lost to follow-up within 6 months of screening were not excluded.

Data source: Provincial breast cancer screening programs

Cancer detection rate (per 1,000 screens) of breast cancers among individuals aged 50-74, who were screened within a screening mammography program, by jurisdiction and screening sequence – 2019 and 2020

Jurisdiction Screening sequence Year Rate (per 1,000)
British Columbia Initial screen 2019 10.8
British Columbia Initial screen 2020 10.8
Alberta Initial screen 2019 9.8
Alberta Initial screen 2020 7.3
Saskatchewan Initial screen 2019 6.1
Saskatchewan Initial screen 2020 6.9
Manitoba Initial screen 2019 7.5
Manitoba Initial screen 2020 5.7
Ontario Initial screen 2019 7.1
Ontario Initial screen 2020 7.4
Quebec Initial screen 2019 8.7
Quebec Initial screen 2020 9.0
New Brunswick Initial screen 2019 7.3
New Brunswick Initial screen 2020 8.6
Nova Scotia Initial screen 2019 15.1
Nova Scotia Initial screen 2020 Data not available
Prince Edward Island Initial screen 2019 Suppressed due to small number
Prince Edward Island Initial screen 2020 9.7
Newfoundland and Labrador Initial screen 2019 10.5
Newfoundland and Labrador Initial screen 2020 Data not available
Northwest Territories Initial screen 2019 Suppressed due to small number
Northwest Territories Initial screen 2020 Data not available
British Columbia Subsequent screen 2019 5.8
British Columbia Subsequent screen 2020 5.7
Alberta Subsequent screen 2019 5.7
Alberta Subsequent screen 2020 5.9
Saskatchewan Subsequent screen 2019 5.8
Saskatchewan Subsequent screen 2020 5.6
Manitoba Subsequent screen 2019 6.1
Manitoba Subsequent screen 2020 5.4
Ontario Subsequent screen 2019 5.7
Ontario Subsequent screen 2020 6.1
Quebec Subsequent screen 2019 6.1
Quebec Subsequent screen 2020 6.3
New Brunswick Subsequent screen 2019 3.2
New Brunswick Subsequent screen 2020 4.9
Nova Scotia Subsequent screen 2019 5.2
Nova Scotia Subsequent screen 2020 Data not available
Prince Edward Island Subsequent screen 2019 Suppressed due to small number
Prince Edward Island Subsequent screen 2020 5.5
Newfoundland and Labrador Subsequent screen 2019 4.9
Newfoundland and Labrador Subsequent screen 2020 Data not available
Northwest Territories Subsequent screen 2019 Suppressed due to small number
Northwest Territories Subsequent screen 2020 Data not available

Footnotes

  • SK: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited. Screens that were lost to follow-up within 6 months of screening were not excluded.
  • ON: Abnormal screens that were lost to follow-up were excluded, regardless of the 6-month period.
  • QC: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited. Cancer includes in-situ, invasive and unspecified breast cancers.
  • NB, NS and NL: Screens that were lost to follow-up within 6 months of screening were not excluded.

Data source: Provincial breast cancer screening program

Time to diagnosis

Percentage of abnormal screens among individuals aged 50-74 that had a definitive diagnosis without biopsy within 5 weeks, by jurisdiction — 2019 and 2020

Jurisdiction Year Percent (%)
British Columbia 2019 76.3
British Columbia 2020 77.6
Alberta 2019 94.9
Alberta 2020 93.8
Saskatchewan 2019 Data not available
Saskatchewan 2020 Data not available
Manitoba 2019 Data not available
Manitoba 2020 Data not available
Ontario 2019 90.1
Ontario 2020 91.6
Quebec 2019 71.7
Quebec 2020 78.4
New Brunswick 2019 73.2
New Brunswick 2020 73.0
Nova Scotia 2019 74.4
Nova Scotia 2020 Data not available
Prince Edward Island 2019 70.4
Prince Edward Island 2020 82.5
Newfoundland and Labrador 2019 84.9
Newfoundland and Labrador 2020 Data not available
Northwest Territories 2019 Data not available
Northwest Territories 2020 Data not available

Footnotes

  • AB: Data included minor abnormal screens that moved out of province after screening.
  • ON: Abnormal screens that were lost to follow-up were excluded.
  • QC: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited.
  • NB: Data for 2020 was incomplete.

Data source: Provincial breast cancer screening programs

Percentage of abnormal screens among individuals aged 50-74 that had a definitive diagnosis with biopsy within 7 weeks, by jurisdiction — 2019 and 2020

Jurisdiction Year Percent (%)
British Columbia 2019 66.4
British Columbia 2020 71.1
Alberta 2019 91.5
Alberta 2020 93.2
Saskatchewan 2019 Data not available
Saskatchewan 2020 Data not available
Manitoba 2019 Data not available
Manitoba 2020 Data not available
Ontario 2019 75.5
Ontario 2020 78.1
Quebec 2019 47.6
Quebec 2020 53.7
New Brunswick 2019 65.8
New Brunswick 2020 66.7
Nova Scotia 2019 64.2
Nova Scotia 2020 Data not available
Prince Edward Island 2019 62.6
Prince Edward Island 2020 77.6
Newfoundland and Labrador 2019 67.0
Newfoundland and Labrador 2020 Data not available
Northwest Territories 2019 Data not available
Northwest Territories 2020 Suppressed due to small number

Footnotes

  • AB: Data included minor abnormal screens that moved out of province after screening.
  • ON: Abnormal screens that were lost to follow-up were excluded.
  • QC: Data included individuals aged 50-69 since individuals aged 70-74 were not routinely invited.
  • NB: Data for 2020 was incomplete.

Data source: Provincial breast cancer screening programs

Post-screen cancer detection rate

Post-screen diagnosed breast cancer rate (per 10,000 screens) among individuals aged 50-74 who were screened within a screening mammography program, by jurisdiction — screening year 2017-2018

Jurisdiction Follow-up interval Behaviour of cancer Rate (per 10,000)
British Columbia 0-12 months DCIS 0.3
British Columbia 0-12 months Invasive 5.8
British Columbia >12-24 months DCIS 0.7
British Columbia >12-24 months Invasive 8.3
British Columbia >24-36 months DCIS 0.2
British Columbia >24-36 months Invasive 3.2
Alberta 0-12 months DCIS Data not available
Alberta 0-12 months Invasive Data not available
Alberta >12-24 months DCIS Data not available
Alberta >12-24 months Invasive Data not available
Alberta >24-36 months DCIS Data not available
Alberta >24-36 months Invasive Data not available
Saskatchewan 0-12 months DCIS Data not available
Saskatchewan 0-12 months Invasive Data not available
Saskatchewan >12-24 months DCIS Data not available
Saskatchewan >12-24 months Invasive Data not available
Saskatchewan >24-36 months DCIS Data not available
Saskatchewan >24-36 months Invasive Data not available
Manitoba 0-12 months DCIS Suppressed due to small number
Manitoba 0-12 months Invasive 6.1
Manitoba >12-24 months DCIS Suppressed due to small number
Manitoba >12-24 months Invasive 8.2
Manitoba >24-36 months DCIS Data not available
Manitoba >24-36 months Invasive Data not available
Ontario 0-12 months DCIS 1.1
Ontario 0-12 months Invasive 7.8
Ontario >12-24 months DCIS 0.6
Ontario >12-24 months Invasive 8.6
Ontario >24-36 months DCIS Data not available
Ontario >24-36 months Invasive Data not available
Quebec 0-12 months DCIS Data not available
Quebec 0-12 months Invasive Data not available
Quebec >12-24 months DCIS Data not available
Quebec >12-24 months Invasive Data not available
Quebec >24-36 months DCIS Data not available
Quebec >24-36 months Invasive Data not available
New Brunswick 0-12 months DCIS Data not available
New Brunswick 0-12 months Invasive 8.3
New Brunswick >12-24 months DCIS Data not available
New Brunswick >12-24 months Invasive 11.5
New Brunswick >24-36 months DCIS Data not available
New Brunswick >24-36 months Invasive 7.4
Nova Scotia 0-12 months DCIS Data not available
Nova Scotia 0-12 months Invasive Data not available
Nova Scotia >12-24 months DCIS Data not available
Nova Scotia >12-24 months Invasive Data not available
Nova Scotia >24-36 months DCIS Data not available
Nova Scotia >24-36 months Invasive Data not available
Prince Edward Island 0-12 months DCIS Suppressed due to small number
Prince Edward Island 0-12 months Invasive 10.0
Prince Edward Island >12-24 months DCIS Suppressed due to small number
Prince Edward Island >12-24 months Invasive 10.7
Prince Edward Island >24-36 months DCIS Suppressed due to small number
Prince Edward Island >24-36 months Invasive 5.0
Newfoundland and Labrador 0-12 months DCIS Data not available
Newfoundland and Labrador 0-12 months Invasive Data not available
Newfoundland and Labrador >12-24 months DCIS Data not available
Newfoundland and Labrador >12-24 months Invasive Data not available
Newfoundland and Labrador >24-36 months DCIS Data not available
Newfoundland and Labrador >24-36 months Invasive Data not available
Northwest Territories 0-12 months DCIS Data not available
Northwest Territories 0-12 months Invasive Data not available
Northwest Territories >12-24 months DCIS Data not available
Northwest Territories >12-24 months Invasive Data not available
Northwest Territories >24-36 months DCIS Data not available
Northwest Territories >24-36 months Invasive Data not available

Footnotes

  • MB: Data for DCIS and invasive breast cancer were combined to avoid residual disclosures of small numbers. Those with a bilateral mastectomy were not excluded.
  • NB and PE: Data for DCIS and invasive breast cancer were combined to avoid residual disclosures of small numbers.
  • ON: Screens for individuals lost to follow-up, deceased, or those who had a bilateral mastectomy during the follow-up interval were not excluded.
  • QC: Post-screen diagnosed cancer rate was 6.9 per 10,000 person-years for 0-12 months (based on screens in 2019) and 10.9 per 10,000 person-years for 12-24 months (based on screens in 2018). Data included individuals aged 50-69, the cancer included invasive breast cancer only. The post-screen cancers were measured at the end of 2020, the denominator was cumulative follow up in person-years after a negative screening episode.

Data source: Provincial breast cancer screening program