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Extrapolation of cost-effectiveness information to local settings
Journal of Health Services Research & Policy
|March 8, 1998
Summary
Relying on published cost-effectiveness analysis results without local validation is risky. Decision-makers must assess local parameter applicability to avoid healthcare inefficiency and ensure cost-effectiveness.
Area of Science:
- Health Economics
- Decision Science
- Public Health Policy
Background:
- Healthcare decision-makers increasingly use economic evaluations.
- Published cost-effectiveness data is often applied without considering local context.
- Naive application of external economic data can lead to inefficient resource allocation.
Purpose of the Study:
- To highlight the risks of using published cost-effectiveness information in different settings.
- To guide decision-makers in assessing the local relevance of published economic evaluations.
- To advocate for local re-analysis of cost-effectiveness data.
Main Methods:
- Identifying sources of variation in cost-effectiveness parameters (unit costs, disease characteristics, comparators).
- Demonstrating how local values can be substituted for unit cost differences.
- Proposing local threshold analysis for decision-making under uncertainty.
Main Results:
- Published cost-effectiveness results may not be directly applicable due to local variations.
- Local unit cost differences allow for direct substitution and estimation of local results.
- Significant variations in disease parameters or comparators necessitate assumptions about interactions.
- Local threshold analysis can support decisions when policy changes impact costs or effectiveness.
Conclusions:
- Applying published cost-effectiveness findings without local re-analysis risks promoting inefficiency.
- Decision-makers must critically evaluate the applicability of published economic evaluations to their specific context.
- Explicit reporting of methods and comparators in economic evaluations is crucial for local re-analysis.
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