Fourth national mental health plan: measurement strategy

NMHP PI 12 Prevalence of mental illness

Page last updated: May 2011

  • Strategic issue - Prevention and Early Intervention.
  • Rationale - Monitoring the overall prevalence rates provides a global indication of the mental health of Australians.
  • Endorsement status - Endorsed by AHMAC Mental Health Standing Committee, February 2011.
  • Date last updated - January 2011.
Indicator details
National Mental Health Performance Framework
Data collection details

Indicator details

  • Description - Percentage of the population who meet the criteria for a diagnosis of a mental illness in the past 12 month.
  • Numerator - Population aged 16–85 years with a diagnosable mental illness.
  • Denominator - Estimated resident population aged 16–85 years.
  • Computation - (Numerator Denominator) x 100.
  • Definitions - Mental illness is defined as a clinically diagnosable disorder that significantly interferes with an individual's cognitive, emotional or social abilities, generally according to the classification systems Diagnostic and Statistical Manual of Mental Disorders (DSM) or the International Classification of Diseases (ICD).
  • Presentation - Percentage.
  • Disaggregation - Age, subject to sample size.
  • Is specification interim or long-term? - Long-term. Top of page

National Mental Health Performance Framework

  • Tier - Tier I - Health Status and Outcomes
  • Primary domain - Health conditions.
  • Type of measure - Outcome.
  • Level at which indicator can be useful for benchmarking - State/Territory.

Data collection details

  • Data source(s)
    • Numerator - National Survey of Mental Health and Wellbeing 2007.
    • Denominator - Estimated resident population 2007.
  • Data source(s) type
    • Numerator - Survey.
    • Denominator - Census.
  • Frequency of data source(s) collection
    • Numerator - Ten-yearly
    • Denominator - 2007.