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Related Experiment Videos

Multi-method approach to valuing health states: problems with meaning.

Erik Nord1, Paul Menzel, Jeff Richardson

  • 1Norwegian Institute of Public Health, Oslo, Norway. erik.nord@fhi.no

Health Economics
|January 4, 2006
PubMed
Summary

Pure health valuations derived from multi-method approaches are ordinal, not cardinal, and thus unsuitable for weighting life years. Direct expression of these values would negate the need for indirect methods.

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Area of Science:

  • Health Economics
  • Decision Analysis

Background:

  • Salomon and Murray proposed extracting 'pure' health valuations using maximum likelihood techniques on predetermined functional forms and multi-method valuation data.
  • This approach aimed to identify parametric relationships between 'pure' valuations and standard valuation techniques.

Discussion:

  • This critique argues that the derived 'pure' health valuations are ordinal, not cardinal, and the multi-method approach creates a misleading impression of cardinality.
  • Ordinal valuations lack the necessary properties for use as weights in life-year calculations.

Key Insights:

  • The 'pure' health valuations obtained are fundamentally ordinal, limiting their applicability in quantitative health economics.
  • The indirect multi-method approach is questioned, suggesting direct valuation methods may be more appropriate if cardinality can be demonstrated.

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Outlook:

  • Further research should focus on establishing the cardinality of health valuations or exploring alternative methods for direct elicitation.
  • Clarifying the nature of health valuations (ordinal vs. cardinal) is crucial for accurate health economics modeling and policy decisions.