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Errata: Ontario Cancer Statistics 2018

Last updated: April 30, 2019

The following information identifies errors and corrections in the Ontario Cancer Statistics 2018 report and supporting products, for both print and electronic versions.

The Data Tables Excel workbook includes all of the data updates mentioned here. It is the authoritative source for the latest statistics from Ontario Cancer Statistics 2018.

If you previously downloaded the Data Tables workbook, please delete the file and replace it with the current version.

 

Section Description Product Location Action Taken/Correction Date Corrected

Chapter 3: Emerging Issues in Cancer Control

Table 3.7:

  • An error in the count for “Total exceeding recommended wait time” for female breast cancer for priority level II
a)    Full report: PDF & print
b)    Chapter 3 individual chapter PDF
c)    Data Tables workbook
a) Page 52
b) Page 52
c) Tab “Table 3.7”

All electronic documents were corrected 

Correct number: 642 

April 5, 2019

Chapter 4: Cancer Incidence Rates and Trends

Figure 4.3:

  • An error in the count and percentage of colorectal cancer cases for stage III in the figure, footnotes and associated text 

a)    Full report: PDF & print
b)    Chapter 4 individual chapter PDF
c)    “Cancer incidence in Ontario” PowerPoint
d)    Data Tables workbook

a)    Pages 14, 76-77
b)    Pages 76-77
c)    Slide #8
d)    Tab “Figure 4.3”

All electronic documents were corrected

Correct numbers:

  • Figure: Stage III (colorectal): 29.9%
  • Figure footnotes: Colorectal n = 7,029 (excludes unknown stage = 233)

Correct statements:

  • Page 14: “The greatest proportion of staged colorectal cancer cases in 2013 were diagnosed at stage III (29.9%)”
  • Page 77: “The majority of staged colorectal cancer cases were diagnosed at stage II (26.4%) or stage III (29.9%)”

August 29, 2018
 

Chapter 4: Cancer Incidence Rates and Trends

Table 4.3:

  • Errors in the counts and/or age-specific incidence rates and/or confidence intervals for the following cancer types:
    • All cancers
    • Bladder
    • Brain
    • Breast (female)
    • Kidney
    • Leukemia
    • Melanoma
    • Non-Hodgkin lymphoma
    • Ovary
    • Prostate
       

a)    Full report: PDF & print
b)    Chapter 4 individual chapter PDF
c)    Data Tables workbook
 

a)    Pages 67-68
b)    Pages 67-68
c)    Tab “Table 4.3”
 

All electronic documents were corrected 

April 5, 2019
 

Chapter 5: Cancer Mortality Rates and Trends

Table 5.3:

  • Errors in the counts and/or age-specific mortality rates and confidence intervals
     

a)    Full report: PDF & print
b)    Chapter 5 individual chapter PDF
c)    Data Tables workbook
 

a)    Pages 88-89
b)    Pages 88-89
c)    Tab “Table 5.3”
 

All electronic documents were corrected

April 5, 2019

Chapter 8: Cancer Statistics by Public Health Unit

Table 8.1:

  • Errors in the age-standardized incidence rate (ASIR) for lung cancer, males, for most public health units in the table and associated visualization
     
a)    Full report: PDF & print
b)    Chapter 8 individual chapter PDF
c)    The visualization entitled “Males - Lung Cancer”
d)    Data Tables workbook
 
a)    Pages 130-131
b)    Pages 130-131
c)    Page 128
d)    Tab “Table 8.1”
 

All electronic documents were corrected 

April 5, 2019

Chapter 8: Cancer Statistics by Public Health Unit

Table 8.4:

  • Errors in the confidence intervals for the age-standardized mortality rate (ASMR) for breast cancer, females, for all public health units in the table 
  • Error in the count for lung cancer, males, for York Region
     
a)    Full report: PDF & print
b)    Chapter 8 individual chapter PDF
c)    Data Tables workbook
 
a)    Pages 146-147
b)    Pages 146-147
c)    Tab “Table 8.4”
 

All electronic documents were corrected 

Correct number (Lung Cancer, York Region): 397

April 5, 2019

Technical Appendix

Table TA.1:

  • Errors in the “DCO” and “Microscopically confirmed” number and percentage of cases and associated text  
     
a)    Full report: PDF & print
b)    Technical and Data Appendix individual chapter PDF
c)    Data Tables workbook
 
a)    Pages 151-152
b)    Pages 151-152
c)    Tab “Table TA.1”
 

All electronic documents were corrected

Correct statements (Page 151):

  • “Overall, 1.8% of cases diagnosed in 2013 were DCOs. The percentage ranged from a low of zero for testicular cancer to a high of 4.9% for liver cancer.” 
  • “For all cancer types, 89.8% of cases were microscopically confirmed.”
  • “The percentage microscopically confirmed varied from a low of 56.8% for liver cancer to a high of 99.3% for thyroid cancer.”
April 5, 2019

Technical Appendix

Analysis, Cancer Incidence and Mortality:

  • Errors in statements referencing the year range under the  “Projections” section
     
a)    Full report: PDF & print
b)    Technical and Data Appendix individual chapter PDF
 
a)    Page 162
b)    Page 162
 

All electronic documents were corrected

Correct statements:

  • “For incidence projections, cases meeting the IARC/IACR multiple primary rules from 1984 to 2012 were grouped by five-year age groups and time periods.”
  • “Population data was similarly aggregated (with the exception of bladder cancer for which cases were grouped from 1994 to 2012 due to the classification changes since 1989).”
  • “Mortality projections were also performed using a Nordpred Power 5 age-period-cohort model using cancer deaths from 1984 to 2012 divided into five-year age groups and time periods."
April 5, 2019