Dementia is a significant and growing health and aged care issue in Australia that has a substantial impact on the health and quality of life of people with the condition, as well as for their carers, family and friends. The number of people with dementia is expected to double by 2058 (AIHW 2023) due to growth and ageing of Australia’s population. This will create many challenges for Australia’s health, aged care, disability and social support systems in delivering high-quality services to the growing numbers of people with dementia and their carers, providing relevant training for the aged-care workforce, and funding dementia research.

Dementia is a multifaceted condition that impacts people in different ways. Data can help understand these impacts, highlight areas requiring improvement and monitor changes over time, and inform decision-making by government and service providers. Australia’s understanding of the impact of dementia on its population and health and aged care systems has been largely based on international studies and bringing together data from multiple Australian sources established for administrative or other purposes. This is a problem, as information from international research may not reflect the Australian experience, and often data sources used to monitor dementia are not designed for this purpose. 

What are the aims and goals of the plan?

The aim of the National Dementia Data Improvement Plan 2023–2033 (‘the plan’) is to deliver better data to improve outcomes for people with dementia and their carers in Australia by improving national dementia data for population-level monitoring, research, and reporting. The plan will enhance and add to the data available for monitoring and reporting on dementia in Australia over the next 10 years to provide an evidence base for effective policy development, research, service provision and planning. 

Specific goals of the plan are that by 2033, Australia will have:

  • robust dementia prevalence and incidence data
  • national dementia data available and reported regularly in key monitoring areas*
  • improved dementia data in priority population groups
  • dementia data within wider national data linkages
  • harmonised dementia data collected across sources. 

Achieving one or more of the above goals would greatly improve data available to effectively deliver and evaluate policies and services aimed at improving the lives of people with dementia and their carers in Australia. 

*Key dementia monitoring areas include the data gaps listed in the next section.

What are the objectives of the plan?

The objectives of the plan are to fill data gaps across 14 identified areas to meet the needs of the AIHW National Centre for Monitoring Dementia (NCMD) and data development needed to assess the performance of the National Dementia Action Plan (NDAP). These objectives will be met through performing several identified activities which will be updated over time and prioritised based on the ability to fill data gaps, provide foundational data, manage dependencies, and improve data on priority populations.

The key data gaps and activities cover the following areas:

  1. Risk and protective factors for dementia
  2. Dementia awareness and stigma
  3. Dementia prevalence and incidence
  4. Timeliness of dementia diagnosis
  5. Dementia type
  6. Dementia severity and progression
  7. Dementia diagnosis and management
  8. Collection and reporting of dementia and other health conditions in aged care data
  9. First Nations people-specific health care data on dementia
  10. Other care and support services used by people with dementia and their carers
  11. The workforce treating and caring for people with dementia
  12. Comorbidities in people with dementia 
  13. Informal carers of people with dementia, including their needs and outcomes
  14. Direct and indirect costs of dementia to the Australian economy.

The overarching elements of a data improvement cycle are shown in Figure 1.1. The first step is identifying data gaps, which has been undertaken already for dementia in the AIHW report: Dementia data gaps and opportunities (AIHW 2020). This improvement plan addresses the next step in the improvement cycle, by identifying data improvement activities and assessing their priority. The ability of new data stemming from activities proposed in this plan to meet the goals of the plan will be reviewed and evaluated over the next 10 years. See Future reviews for more detail. 

Figure 1.1: Data improvement cycleThe data improvement cycle involves three stages – (1) identifying data gaps, (2) undertaking data improvement activities, and (3) filling the data gap and using the data for reporting purposes.

The data improvement activities outlined in the plan should improve the reliability, accuracy, validity, availability and/or timeliness of dementia data. Improvements may involve the scope, coverage, collection tools, methods, integration, accessibility and/or harmonisation of data, and provide potential measures needed for monitoring the NDAP.

The plan builds on recommendations made in the 2020 AIHW report Dementia data gaps and opportunities, and incorporates anticipated data needs for:

Many of these data needs have occurred in response to aged care reforms and government strategies across health, welfare and best practice use of data, and can be considered as enablers for this plan.

What is the scope of the data improvement activities? 

This plan describes a broad scope of national dementia data improvement activities for the purposes of population-level monitoring, research, and reporting. It includes the following types of data improvement activities:

  • create new, ongoing data sources – including collecting new administrative data or electronic health data, or conducting new surveys 
  • expand existing data collections – for example, by including dementia data items in an administrative collection or survey, or by increasing the sample size of an existing survey to facilitate analysis and reporting on people with dementia
  • perform one-off studies to provide data to fill a key data gap or quality issue 
  • link data across existing data sets to expand and enhance dementia data resources and facilitate validation of dementia estimates 
  • harmonise data to improve dementia data coherence across data sets by implementing standard concepts and classifications
  • develop and implement methods to improve dementia monitoring and reporting, especially for the NDAP.

The scope may change over the 10-year plan and include learnings from dementia research and consultation, the evolution of new data sources and methods, the NDAP, the National Aged Care Data Strategy, the National Disability Strategy, the National Preventive Health Strategy and the National Health Reform Agreement. Figure 1.2 shows the relationship of these strategies to this plan, the NCMD and short- (2-year) and long-term (10-year) goals.

Figure 1.2: Relationship of enablers, this National Dementia Data Improvement Plan, and the NCMD with the short- and long-term goals of the plan

The enablers for the National Data Improvement Plan (NDIP) include the objectives of the National Dementia Action Plan, the WHO Global Action Plan for Dementia, Australian Government data and policy reforms, and Australian research expertise.

Who is the intended audience for the plan?

This plan is for policy makers, researchers, health, disability, aged care and social support service providers, and national data custodians who play a key role in the collection, management and/or reporting of data on dementia in Australia and who use data to inform dementia policy, service provision and planning.

How has the plan been developed? 

The AIHW has developed this plan in consultation with the Australian Government Department of Health and Aged Care (DoHAC), the AIHW Dementia Expert Advisory Group and the DoHAC Dementia Expert Reference Group (DoHAC 2022b). These groups include dementia researchers, clinicians, peak bodies for dementia, carers and First Nations aged care, key providers for health, aged care and dementia-specific support services, people with lived experience of dementia, data custodians and subject matter experts. The plan has also undergone wider consultation with a range of data custodians and expert advisors of individual sectors to inform the development of individual data improvement activities. 

Future reviews

Plan reviews will occur following the NDAP release and evaluations. Proposed dates for release and/or evaluation of the NDAP and the NCMD are outlined in Table 1.1.

Table 1.1: Key milestones and plan reviews
Key milestonesData improvement plan


Review of data gaps and priorities following the release of the NDAP to ensure the plan is aligned to meet NDAP data reporting needs.


Review of data gaps and priorities to meet policy, program and reporting needs.

Review of progress towards achieving the 2-year goals and adjust milestones to meet the 10-year goals.


Review of data gaps and priorities following the mid-term review of the NDAP to ensure the plan is aligned to meet new NDAP data reporting needs.

Review of progress towards achieving the mid-term goals and adjust milestones to meet the 10-year goals.


Review of data gaps and priorities to meet policy, program and reporting needs. 

Review of progress towards achieving the 10-year goals.

Plan reviews will reflect improvements in data access and integration and dementia knowledge to update the data gaps and activities, list any new dementia data improvement activities required and progress to date in improving dementia data to meet the plan goals. 

It should be noted that the data gaps and the proposed activities will evolve over time as new data or data needs arise. The understanding of the most appropriate activities to obtain data from different populations, sources or data types may also evolve and require changes to the proposed activities.