Web update: Participation in national cancer screening programs in 2014–2015 - Technical Note - Indicator specifications

Web update: Participation in national cancer screening programs in 2014–2015

Indicator specifications

Participation rate in the National Bowel Cancer Screening Program (2014–2015)

This measure reflects the participation rate in the National Bowel Cancer Screening Program for the 24-month period 2014–2015.

Data source
Data source National Bowel Cancer Screening Program Register, 2014–2015, as at 31 December 2016.
Indicator description and calculation
Type of measurement Percentage, reported at one decimal place.
Numerator

Number of people invited to screen through the National Bowel Cancer Screening Program in a 24-month period who returned a completed screening test within the defined 24-month period or the following six months.

Notes:

  • The numerator is the number of people screened, not the number of tests completed.
  • This participation indicator counts participation activity over a 24-month period and uses a six-month follow-up period to ensure those invited have had time to respond.
Denominator

Number of people invited to screen through the National Bowel Cancer Screening Program in a 24-month period.

Notes:

  • Eligible population is those Australians aged 50–74 who received an invitation to screen.
  • Two-yearly screening for those aged 50–74 is not fully rolled out. During the time period reported, the specific ages invited within the 50–74 age range were 50, 55, 60, 65, 70 and 74.
  • Excludes those who either opted off or suspended from the program without completing a screening test.
Calculation (Numerator ÷ denominator) × 100
Geographic disaggregation

SA1 or postcode of residence reported at the following levels:

  • Primary Health Network (PHN) area
  • Statistical Area Level 3 (SA3).
Suppression The rate is suppressed and reported as ‘NP’ if any of the following conditions are met:
  • If the number of people screened (numerator) was less than 20 for an area
  • If the eligible population of an area (denominator) was less than 100.
Data source specific notes These results calculate participation rates using the new National Bowel Cancer Screening Program performance indicator specifications. This indicator now measures a two-year invitation period and also excludes those who opted off or suspended from the program without completing a test. Therefore, these results cannot be compared to rates reported for invitations prior to 2014.

Participation rate in BreastScreen Australia (2014–2015)

This measure reflects the participation rate in BreastScreen Australia for the 24-month period 2014–2015.

Data sources
Data sources
  • AIHW analysis of BreastScreen Australia data, 2014–2015.
  • Population is the average of the Australian Bureau of Statistics (ABS) Estimated Resident Population (ERP) for females aged 50–74 at 30 June 2014 and 2015.
Indicator description and calculation
Type of measurement Percentage, reported at one decimal place.
Numerator

Number of women aged 50–74 screened during a 24-month period.

Notes:

  • Participation is measured over two years to align with the two-year recommended screening interval.
  • Count is of individual women, not screening episodes.
  • If a woman was screened more than once in a 24-month period, the last screening episode is counted.
Denominator Number of female residents aged 50–74 in each PHN area or SA3 using the ABS ERP as at 30 June averaged over the relevant 24 months.
Calculation (Numerator ÷ denominator) × 100
Geographic disaggregation

Postcode of residence reported at the following levels:

  • PHN area
  • SA3.
Suppression The rate is suppressed and reported as ‘NP’ if any of the following conditions are met:
  • If the number of people screened (numerator) was less than 20 for an area
  • If the eligible population of an area (denominator) was less than 100.

Participation rate in the National Cervical Screening Program (2014–2015)

This measure reflects the participation rate in the National Cervical Screening Program for the 24-month period 2014–2015.

Data sources
Data sources
  • AIHW analysis of state and territory cervical screening register data, 2014–2015.
  • Population is the average of the ABS ERP for females aged 20–69 at 30 June 2014 and 2015 adjusted for the proportion of women who have had a hysterectomy.
Indicator description and calculation
Type of measurement Percentage, reported at one decimal place.
Numerator

Number of women aged 20–69 screened during a 24-month period.

Notes:

  • Count is of individual women, not tests.
  • If a woman was screened more than once in a 24-month period, the first screening test is counted.
  • Excludes women who have opted off the cervical screening register.
  • Excludes vault smears.
Denominator Number of female residents aged 20–69 in each PHN area or SA3 using the ABS ERP as at 30 June averaged over the relevant 24 months, adjusted for the proportion of women who have had a hysterectomy.
Calculation (Numerator ÷ denominator) × 100
Geographic disaggregation

Postcode of residence reported at the following levels:

  • PHN area
  • SA3.
Suppression The rate is suppressed and reported as ‘NP’ if any of the following conditions are met:
  • If the number of people screened (numerator) was less than 20 for an area
  • If the eligible population of an area (denominator) was less than 100.
Data source specific notes Some duplication may occur where the same test is reported to the cervical screening register in two or more jurisdictions. This may lead to erroneous results when focusing on smaller geographical areas. This may affect border areas more than others.