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Related Experiment Videos

A preference-based index for the SF-12.

D Stratmann-Schoene1, T Kuehn, R Kreienberg

  • 1Department of Health Economics, University of Ulm, Germany.

Health Economics
|January 4, 2006
PubMed
Summary

This study developed a new method to assign preference-based values to the SF-12 health survey, showing promising results for direct valuation. Further research is needed for broader application.

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Area of Science:

  • Health Economics
  • Psychometrics
  • Decision Analysis

Background:

  • The SF-12 is a common generic health status measure.
  • Current SF-12 scoring lacks preference-based values.
  • Alternative methods for preference-based indexing require validation.

Purpose of the Study:

  • To conceptualize a preference-based index for the SF-12 using multi-attribute decision analysis.
  • To conduct an empirical study assessing the feasibility and validity of this new index.

Main Methods:

  • Developed and estimated a multi-attribute preference function for the SF-12.
  • Conducted two mail surveys (N=100, 200) and one interview (N=72) with breast cancer patients.
  • Utilized Visual Analogue Scale (VAS) and Standard Gamble (SG) to elicit preference valuations.

Main Results:

  • Identified eight key attributes within the SF-12.
  • Validity testing revealed an average difference of 8 VAS score points between measured and predicted health state values.

Conclusions:

  • The proposed approach shows potential for direct preference-based valuation of the SF-12.
  • The multi-attribute value function demonstrates encouraging psychometric properties.
  • Further extensive studies are recommended, including population-based parameter determination and comparative analysis.

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