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National Bowel Cancer Screening Program: PI 06b-Positive predictive value of diagnostic assessment for detecting colorectal cancer

Identifying and definitional attributes

Metadata item type:Help on this termIndicator
Indicator type:Help on this termIndicator
Short name:Help on this termNational Bowel Cancer Screening Program positive predictive value of diagnostic assessment for detecting colorectal cancer
Synonymous names:Help on this termNBCSP positive predictive value of diagnostic assessment for detecting colorectal cancer
METeOR identifier:Help on this term694179
Registration status:Help on this termHealth, Standard 06/09/2018
Description:Help on this term

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 cancer, measured 12 months after the defined period.

Rationale:Help on this term

This indicator calculates the positive predictive value of follow-up assessment for detecting cancers. This is a measure of the quality and effectiveness of diagnostic assessment.

The NBCSP aims to maximise the early detection of colorectal cancer in the target population.

This can be achieved by detecting cases of colorectal cancer before a person has symptoms, enabling early intervention.

Monitoring the cancer detection rate 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:Help on this termNational Bowel Cancer Screening Program performance indicators 2019– Health, Standard 06/09/2018

Collection and usage attributes

Computation:Help on this term

100 x (Numerator ÷ Denominator)

Numerator:Help on this term

The number of people who returned a positive NBCSP screening test that had a diagnostic assessment and were diagnosed with screen-detected cancer in a defined 12-month period or the following 12 months.

Numerator data elements:Help on this term
Data Element / Data SetPerson—person identifier, X[X(19)]
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPatient—cancer status, code N
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPatient—cancer diagnostic assessment type, bowel cancer code N
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPerson—cancer screening test result, bowel cancer code N[A]
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPatient—cancer diagnostic assessment date, DDMMYYYY
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPatient—diagnosis date of cancer, DDMMYYYY
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Denominator:Help on this term

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:Help on this term
Data Element / Data SetPerson—person identifier, X[X(19)]
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPatient—cancer diagnostic assessment type, bowel cancer code N
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPerson—cancer screening test result, bowel cancer code N[A]
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPatient—cancer diagnostic assessment date, DDMMYYYY
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Disaggregation:Help on this term

Items will be presented by sex and age group, by:

  • State and territory
  • Socioeconomic status
  • Remoteness area
  • Indigenous status
  • Main language spoken at home
  • Disability status
  • Disease screening invitation round
  • Diagnostic assessment type
  • Patient election status

Some disaggregation may result in numbers too small for publication.

Disaggregation data elements:Help on this term
Data Element / Data SetPerson—sex, code X
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPerson—age, total years N[NN]
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPerson—Australian state/territory identifier, code N
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPerson—area of usual residence, statistical area level 1 (SA1) code (ASGS 2016) N(11)
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPerson—geographic remoteness, classification (ASGS-RA) N
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPerson—Indigenous status, code N
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPerson—main language other than English spoken at home, code (ASCL 2016) N[NNN]
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPerson—disability status, yes/no/not stated/inadequately described code N
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPerson—screening round number, identifier N[N]
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPatient—election status, code N
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19
Data Element / Data SetPatient—cancer diagnostic assessment type, bowel cancer code N
Data Source
National Bowel Cancer Screening Program (NBCSP)
NMDS / DSS
National Bowel Cancer Screening Program NBEDS 2018–19

Representational attributes

Representation class:Help on this termPercentage
Data type:Help on this termReal
Unit of measure:Help on this termPerson
Format:Help on this term

N[N].N

Data source attributes

Data sources:Help on this term
Data SourceNational Bowel Cancer Screening Program (NBCSP)
Frequency
6-monthly (register snapshot)
Data custodian

Medicare Australia (Medicare Australia merged with the Department of Human Services in 2011)


Source and reference attributes

Submitting organisation:Help on this term

Australian Institute of Health and Welfare

Relational attributes

Related metadata references:Help on this term

Supersedes National Bowel Cancer Screening Program: PI 06b-Positive predictive value of diagnostic assessment for detecting colorectal cancer Health, Superseded 06/09/2018

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