Performance indicator 1: Participation
Summary
- 1,901,090 participants aged 50–74 were screened through BreastScreen Australia in 2022–2023, equivalent to a crude participation rate of 51.7%.
- 1,950,215 participants aged 50–74 were screened through BreastScreen Australia in 2023–2024, equivalent to a crude participation rate of 52.3% (preliminary data).
- Participation remained steady between 53% and 54% (age-standardised) for participants aged 50–74 between 2014–2015 and 2018–2019. Due to the impact of the COVID-19 pandemic from March 2020 participation decreased to 47% in 2020–2021 and has since increased to 51% in 2022–2023 and 2022–2023, and to 52% in 2023–2024.
Definition
The percentage of females in the population aged 50–74 who are screened through BreastScreen Australia in a 2-year period.
Rationale
Participation is a major indicator of the performance of BreastScreen Australia, which aims to maximise the early detection of breast cancer in the target population aged 50–74. High attendance for screening in this age group maximises the reduction in mortality from breast cancer (BreastScreen Australia 2004).
Guide to interpretation
Participation is measured over 2 years to align with the 2-year recommended screening interval, as most participants will screen only once within a 2-year period. A consequence of measuring participation over 2 years on an annual basis is that there are ‘rolling’ participation rates, in which there is an overlap of 1 calendar year between any 2 consecutive rates. Because of this, the participation rate for a 2-year reporting period is often compared with the previous non-overlapping rate. Participation is based on the number of participants screened, not the number of screening mammograms performed.
Data are presented for participants aged 50–74, the target age group, as well as for participants aged 40–49 and 75+ where appropriate.
Participation data are reported as a percentage of females in the population.
The most recent final participation data are for participants who had a screening mammogram in the years 2022 and 2023, with preliminary data for participants who had a screening mammogram in the years 2023 and 2024.
A higher participation rate is better.
Results
Summary data and trends are shown for both final participation for 2022–2023 and preliminary participation for 2023–2024.
Final participation 2022–2023
In 2022–2023, a total of 2,213,977 participants were screened through BreastScreen Australia, of whom, 1,901,090 (85.9%) were aged 50–74. This is equivalent to a participation rate of 51.7% for those aged 50–74.
Preliminary participation 2023–2024
Preliminary participation data are for 2023–2024 are reported ahead of the reporting in full of final participation data for 2023–2024 in the BreastScreen Australia monitoring report 2026.
In 2023–2024, a total of 2,323,518 participants were screened through BreastScreen Australia, of whom, 1,950,215 (83.9%) were aged 50–74. This is equivalent to a participation rate of 52.3% for the target age group 50–74.
Participation trends
The participation rate among the target age group 50–74 remained stable over time prior to 2020. The age-standardised participation rate remained between 53% and 54% from 2014–2015 to 2018–2019 and decreased to 49.3% and 47.0% in 2019–2020 and 2020–2021, respectively, due to the impact of the COVID-19 pandemic. Participation increased to 51.2% in 2022–2023 and 51.9% in 2023–2024 (Figure 1.1).
Figure 1.1: Participation in BreastScreen Australia, participants aged 50–74, 2014–2015 to 2023–2024
This combined bar/line chart shows the participation remained stable over time between 53% and 54% and decreased to 51.9% in 2023–2024.
The following data are shown for final participation for 2022–2023 only.
Participation by age
In 2022–2023, of the women aged 40 and over who were screened through BreastScreen Australia, participation was highest in the target age group of 50–74. This is in line with the aim of BreastScreen Australia to maximise the proportion of women in the target age group who are screened every 2 years (Figure 1.2). Furthermore, the proportion screened in all 5-year age groups within the target age group was equal to or above 47.6%, peaking at 55.4% in participants aged 65–69. The participation rates outside the target age group were lower, at 13.2% for participants aged 40–49 and 8.0% for participants aged 75 and over.
Figure 1.2: Participation in BreastScreen Australia by age group, 2022–2023
This combined bar/line chart shows participation was highest in participants aged 50–74 at 51.7% and lowest in participants aged 75 and over at 8.0%.
With the addition of ages 70–74 to the target age group, the number of participants screening aged 70–74 increased substantially, from 97,957 in 2011–2012 (the last reporting period for which the target age group was 50–69) to 319,838 in 2022–2023. This equated to a rise in the participation rate of those aged 70–74, from 25.9% in 2011–2012 to 53.4% in 2022–2023. At 53.4%, the participation rate for ages 70–74 is now higher than the participation rate for ages 50–59 of 48.6%.
Participation by state and territory
In 2022–2023, the age-standardised participation rate for the target age group 50–74 varied between the states and territories from 35.1% to 57.1%.
Participation by main language spoken at home
In 2022–2023, the age-standardised participation rate for the target age group 50–74 was 39.9% for those who spoke a language other than English at home compared with 53.9% for those who spoke English at home.
Participation by remoteness area
In 2022–2023, the age-standardised participation rates for the target age group 50–74 were highest in Inner regional and Outer regional areas at 53.6% and 53.4%, respectively, followed by participants living in Major cities and Remote areas at 50.3% and 48.6%, respectively (Figure 1.3). The participation rate was lowest for participants living in Very remote areas at 36.3%.
Participation by socioeconomic area
In 2022–2023, there was little variation in participation for the target age group 50–74 across socioeconomic areas, with all areas having an age-standardised participation rate between 47.3% and 54.5% (Figure 1.3).
Figure 1.3: Participation in BreastScreen Australia, participants aged 50–74, by remoteness area, and by socioeconomic area, 2022–2023
This vertical bar chart on the left shows that the participation was highest in Inner regional areas at 53.6% and lowest for Very remote areas at 36.3%.
This vertical bar chart in the right shows the participation rate across socioeconomic areas ranging between 47.3% and 54.5%.
Participation by month
The number of screening mammograms performed through BreastScreen Australia each month in 2022 and 2023 is shown in Figure 1.4.
The number of screening mammograms performed in 2023 was notably higher than the number of screening mammograms performed in 2022 for the months January to May.
Figure 1.4: Number of screening mammograms performed through BreastScreen Australia, by month, participants aged 50–74, 2022 and 2023
This grouped vertical bar chart shows that the number of screening mammograms performed in 2023 was higher than in 2022.
| Month | 2022 | 2023 |
|---|---|---|
| January | 63467 | 76528 |
| February | 78518 | 86012 |
| March | 90730 | 96082 |
| April | 67253 | 71532 |
| May | 84499 | 96610 |
| June | 83234 | 86051 |
| July | 81319 | 87602 |
| August | 93699 | 93735 |
| September | 84830 | 82929 |
| October | 84475 | 87302 |
| November | 89607 | 91574 |
| December | 57269 | 56516 |
Source: AIHW analysis of BreastScreen Australia data. Data for this figure are available in Table A1.9.