Overall NBCSP outcomes since 2006 until 2024
The Population Based Screening Framework (Standing Committee on Screening 2018) uses 5 incremental stages to describe a population screening pathway. The performance indicator data in this monitoring report have been applied to these stages (Figure 1), and this shows how the indicators relate to the framework over the timeframe of the NBCSP to date (2006 to 2024).
Figure 1: Summary of NBCSP performance indicators between August 2006 and June 2024

(a) Based on the 12,618,146 participants who returned a valid iFOBT.
(b) Information on colonoscopies known through MBS claim only prior to 2018 is not included; PI 3 and PI 4 may be under-reported. Count also includes colonoscopies, from 2021 onwards, that were notified through PFUF data.
(c) Based on available outcome data. Excludes 284,443 assessments with no record of outcome.
(d) Includes improved data from notifiable bowel cancer diagnoses (Australian Cancer Database), to 2021 only.
Notes:
- PI 1: ‘people participated’ counts the people who participated over the time the NBCSP has been operating. It is not a unique count of people, and people who participated multiple times over several years were counted more than once. ‘Unique people participated’ counts each unique person who has participated in the program at least once.
- Assessment and diagnosis (PIs 3–9) rely on information being reported back to the NCSR. As return of NBCSP forms is required (ACSQHC 2020) but not mandated by the NBCSP, there may be incomplete form return and incomplete data. See ‘Current reporting limitations’ for more details.
- PI 5a (adenoma detection rate), PI 5b (PPV of diagnostic assessment for detecting adenoma), and PI 8 (cancer clinico-pathological stage distribution) are not reported due to data incompleteness or unavailability. See ‘Current reporting limitations’ for more details.
Source: AIHW analysis of NCSR as at 31 December 2024 (NCSR RDE 13/01/2025).
References
ACSQHC (Australian Commission on Safety and Quality in Health Care) (2020) Colonoscopy Clinical Care Standard, Australian Commission on Safety and Quality in Health Care, Sydney, accessed 14 May 2025.