Identifying and definitional attributes
|Metadata item type:||Indicator|
|Short name:||National Bowel Cancer Screening Program interval cancer rate|
|Synonymous names:||NBCSP interval cancer rate|
The percentage of people who returned a National Bowel Cancer Screening Program (NBCSP) screening test in a defined 12-month period who were diagnosed with colorectal cancer (not involving a positive NBCSP screen and positive assessment) in the following 24-month period, or before their next screen, whichever comes first.
An interval cancer is a colorectal cancer that is diagnosed after a screen that detected no cancer and before the next screen or in the following 24 months, whichever is earlier. Interval cancers are inevitable in a population based screening program; a low interval cancer rate is desirable.
A high interval cancer rate reduces the potential for the program to achieve reductions in morbidity and mortality from colorectal cancer. Monitoring interval cancer rates is also important to assess the diagnostic assessment component of the screening pathway.
Monitoring the interval cancer rate by various stratifications may also reveal emerging positive or negative trends that need to be investigated and rectified if necessary.
|Indicator set:||National Bowel Cancer Screening Program performance indicators 2014–2018|
Health, Superseded 06/09/2018
Collection and usage attributes
10,000 x (Numerator ÷ Denominator)
The number of people who returned an NBCSP screening test in a defined 12-month period who were diagnosed with colorectal cancer in the following 24 months (or before their next screen), after negative or inconclusive screen(s), or a positive screen and negative assessment(s).
|Numerator data elements:|
The number of people who returned a negative screening test or a positive screening test with a negative diagnostic assessment in the defined 12-month period.
|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
6-monthly (register snapshot)
Medicare Australia (Medicare Australia merged with the Department of Human Services in 2011)
Source and reference attributes
Australian Institute of Health and Welfare
|Related metadata references:|
Has been superseded by National Bowel Cancer Screening Program: PI 07-Interval cancer rate