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Cost-Effectiveness of Dementia Prevention Interventions
1Dr Ian McRae, Centre for Research on Ageing Health and Wellbeing, Research School of Population Health, The Australian National University, Canberra, ACT 2600, Australia, Email: Ian.S.McRae@anu.edu.au, Ph: +61 431 929 750.
The Journal of Prevention of Alzheimer'S Disease
|February 11, 2021
Summary
Estimating the cost-effectiveness of dementia prevention interventions is crucial. This study presents a method to assess these costs, showing interventions are likely cost-effective, especially for high-risk groups.
Area of Science:
- Gerontology
- Public Health
- Health Economics
Background:
- Assessing the cost-effectiveness of dementia interventions requires long-term impact data, which is often unavailable.
- Estimates must rely on assumptions regarding the sustainability of short-term intervention effects.
Purpose of the Study:
- To develop and test a methodology for evaluating dementia prevention cost-effectiveness.
- To transparently incorporate assumptions and sensitivity analyses using short-term study data.
Main Methods:
- Utilized aggregate data on lifetime dementia costs (financial and quality of life).
- Incorporated assumptions on the sustainability of short-term intervention gains.
- Applied the approach to theoretical risk factor reduction and a specific online intervention trial.
Main Results:
- A notional intervention reducing dementia risk factors by 5% was cost-effective at $A460 per person.
- For higher-risk groups, this intervention was cost-effective at $2,148 per person.
- An online program ($825/person) was cost-effective at $1,850/person, even with a 75% reduction in effect over time.
Conclusions:
- Dementia risk factor interventions can be cost-effective if well-designed.
- Longer-term follow-up is essential to confirm the impact and sustainability of intervention effects.
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