Analysis of breast cancer outcomes and screening behaviour for BreastScreen Australia

Publication
Release Date: 26 Nov 2018
Author: AIHW

PDF Report (1.8Mb)

This is the second report from an Australian-first project combining data from BreastScreen Australia, the National Cervical Screening Program and the National Bowel Cancer Screening Program, focusing on breast cancer outcomes and screening behaviour in BreastScreen Australia. It was found that screen-detected breast cancers were less likely to cause death than never-screened breast cancers for all age groups eligible to screen in BreastScreen Australia, with analyses giving new insights into screening behaviour.

ISSN: 2205-4855 (PDF) 1039-3307 (Print)
ISBN: 978-1-76054-450-8
Cat. no: CAN 118
Pages: 137

Findings from this report:

Screen-detected breast cancers less likely to cause death than breast cancers diagnosed in never-screened women
60% rescreened after their first screen, 70% after their second screen, and 80% after their third or subsequent screen
Women who were regular cervical screeners were more likely to participate regularly in BreastScreen Australia
55.3% of screen-detected breast cancers were small (≤15 mm) compared with 27.6% of never-screened breast cancers

Acknowledgments
Abbreviations
Symbols
Summary
1 Introduction
- 1.1 Cancer screening programs in Australia
- 1.2 Breast cancer screening reduces mortality
- 1.3 Participation in BreastScreen Australia
2 Objectives
- 2.1 Premise of the broader data linkage project
- 2.2 Objectives of the broader data linkage project
- 2.3 Dissemination of findings from the broader data linkage project
3 Data and methods
- 3.1 Data sources for the data linkage project
- 3.2 Data flow and data linkage methods for the data linkage project
- 3.3 Methods used in this report
4 Description of cohort
- 4.1 Breast cancer definitions
- 4.2 Summary statistics
- 4.3 Descriptive statistics
5 Breast cancer outcomes
- 5.1 Summary cancer and death statistics
- 5.2 Survival
- 5.3 Age differences
- 5.4 Exploration of potential biases in survival
6 Breast cancer screening behaviour
- 6.1 Screening in BreastScreen Australia
- 6.2 Rescreening in BreastScreen Australia
- 6.3 Special groups
7 Discussion
- 7.1 Objective 1: Cancer outcomes
- 7.2 Objective 2: Screening behaviour
- 7.3 Project limitations and areas for improvement
- 7.4 Where to from here?
Appendix A: Additional data tables
Appendix B: Positive predictive value of screening mammography
Appendix C: Classifications
- Classification of population groups
- Classification of cancer groups
Appendix D: Additional statistical methods
- Correction for lead-time bias
- Correction for screening selection bias
Glossary
References
List of tables
List of figures
List of boxes
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