A5 Ductal carcinoma in situ detection

Table A5.1a: DCIS detection, by year, participants aged 50–74, first screening round, 2014 to 2023

Year

Number

Crude rate

AS rate

2014

173

22.7

23.9

2015

186

22.6

25.2

2016

209

23.7

27.5

2017

213

24.3

28.5

2018

202

23.2

27.1

2019

222

23.9

25.5

2020

169

26.0

30.3

2021

170

21.7

23.9

2022

234

25.9

28.4

2023

301

26.2

27.5

Note: Crude rate is the number of participants with DCIS detected per 10,000 participants screened; age‑standardised (AS) rate is the number of participants with DCIS detected per 10,000 participants screened, age‑standardised to the population of participants attending a BreastScreen Australia service in 2008.

Source: AIHW analysis of BreastScreen Australia data.

Table A5.1b: DCIS detection, by year, participants aged 50–74, subsequent screening rounds, 2014 to 2023

Year

Number

Crude rate

AS rate

2014

1,197 

15.2

14.8

2015

1,125

13.7

12.8

2016

1,131

13.3

12.7

2017

1,057

12.3

11.6

2018

1,182

13.4

12.6

2019

1,117

12.7

11.8

2020

1,138

14.7

13.7

2021

1,193

14.1

13.0

2022

1,248

14.4

13.5

2023

1,331

14.8

13.8

Note: Crude rate is the number of participants with DCIS detected per 10,000 participants screened; age‑standardised (AS) rate is the number of participants with DCIS detected per 10,000 participants screened, age‑standardised to the population of participants attending a BreastScreen Australia service in 2008.

Source: AIHW analysis of BreastScreen Australia data.

Table A5.2: DCIS detection, by age group, all screening rounds, 2023

Age group (years)

Number

Crude rate

40–49

170

12.8

50–59

626

14.8

60–69

679

16.2

70–74

327

19.3

75+

113

23.9

Note: Crude rate is the number of participants with DCIS detected per 10,000 participants screened.

Source: AIHW analysis of BreastScreen Australia data.

Table A5.3: DCIS detection, by state and territory, participants aged 50‍–‍74, all screening rounds, 2023

State and territory

Number

Crude rate

AS rate

NSW

511

15.8

15.4

Vic

428

17.7

17.2

Qld

332

15.6

15.1

WA

195

18.7

18.3

SA

100

12.5

11.7

Tas

28

9.9

9.5

ACT

33

19.5

19.2

NT

5

9.0

9.5

Australia

1,632

16.1

15.6

Notes:

  1. Crude rate is the number of participants with DCIS detected per 10,000 participants screened; age‑standardised (AS) rate is the number of participants with DCIS detected per 10,000 participants screened, age‑standardised to the population of participants attending a BreastScreen Australia service in 2008. Rates based on numbers less than 20 should be interpreted with caution.
  2. State and territory differences need to be taken into consideration when interpreting DCIS detection results. 
  3. A small number of participants may be screened in one jurisdiction but have their DCIS detected in another.

Source: AIHW analysis of BreastScreen Australia data.

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