National Bowel Cancer Screening Program: PI 05b-Positive predictive value of diagnostic assessment for detecting adenoma
Identifying and definitional attributes
|Metadata item type:||Indicator|
|Short name:||National Bowel Cancer Screening Program positive predictive value of diagnostic assessment for detecting adenoma|
|Synonymous names:||NBCSP positive predictive value of diagnostic assessment for detecting adenoma|
|Registration status:||Health, Standard 06/09/2018|
The proportion of people who returned a positive National Bowel Cancer Screening Program (NBCSP) screening test that underwent a diagnostic assessment and were diagnosed with an adenoma, measured 12 months after the defined period.
The NBCSP aims to maximise the early detection of colorectal cancer in the target population. Adenomas are benign growths that have the potential to become cancerous, and their removal is likely to lower the risk of future colorectal cancer in these patients.
This indicator calculates the positive predictive value of follow-up assessment for detecting adenomas. This is a measure of the quality and effectiveness of diagnostic assessment for detecting serious colorectal abnormality.
Monitoring the positive predictive value of diagnostic assessment for detecting adenoma by various stratifications may also reveal emerging positive or negative trends that need to be investigated and rectified if necessary.
To reduce the effect of any lag time between invitation, positive screen, diagnostic assessment and histopathology, this indicator includes all those who underwent diagnostic assessment in the defined period, not all those invited in the defined period (who had undergone diagnostic assessment).
|Indicator set:||National Bowel Cancer Screening Program performance indicators 2019– Health, Standard 06/09/2018|
Collection and usage attributes
100 x (Numerator ÷ Denominator)
The number of people who returned a positive NBCSP screening test that underwent a diagnostic assessment and were diagnosed with an adenoma within a defined 12-month period or the following 12 months.
|Numerator data elements:|
The number of people who underwent diagnostic assessment to follow up a positive screening test in the defined 12-month period and had available diagnostic information.
|Denominator data elements:|
Items will be presented by sex and age group, by:
Some disaggregation may result in numbers too small for publication.
|Disaggregation data elements:|
|Unit of measure:||Person|
Data source attributes
Source and reference attributes
Australian Institute of Health and Welfare
|Related metadata references:|
Supersedes National Bowel Cancer Screening Program: PI 05b-Positive predictive value of diagnostic assessment for detecting adenoma Health, Superseded 06/09/2018