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Estimating an exchange rate between the EQ-5D-3L and ASCOT

Author

Listed:
  • Katherine Stevens

    (University of Sheffield)

  • John Brazier

    (University of Sheffield)

  • Donna Rowen

    (University of Sheffield)

Abstract

Background The aim was to estimate an exchange rate between EQ-5D-3L and the Adult Social Care Outcome Tool (ASCOT) using preference-based mapping via common time trade-off (TTO) valuations. EQ-5D and ASCOT are useful for examining cost-effectiveness within the health and social care sectors, respectively, but there is a policy need to understand overall benefits and compare across sectors to assess relative value for money. Standard statistical mapping is unsuitable since it relies on conceptual overlap of the measures but EQ-5D and ASCOT have different conceptualisations of quality of life. Methods We use a preference-based mapping approach to estimate the exchange rate using common TTO valuations for both measures. A sample of health states from each measure was valued using TTO by 200 members of the UK adult general population. Regression analyses are used to generate separate equations between EQ-5D-3L and ASCOT values using their original value set and TTO values elicited here. These are solved as simultaneous equations to estimate the relationship between EQ-5D-3L and ASCOT. Results The relationship for moving from ASCOT to EQ-5D-3L is a linear transformation with an intercept of −0.0488 and gradient of 0.978. This enables QALY gains generated by ASCOT and EQ-5D to be compared across different interventions. Conclusions This paper estimated an exchange rate between ASCOT and EQ-5D-3L using a preference-based mapping approach that does not compromise the descriptive systems of the two measures. This contributes to the development of preference-based mapping through the use of TTO as the common metric used to estimate the exchange rate between measures.

Suggested Citation

  • Katherine Stevens & John Brazier & Donna Rowen, 2018. "Estimating an exchange rate between the EQ-5D-3L and ASCOT," The European Journal of Health Economics, Springer;Deutsche Gesellschaft für Gesundheitsökonomie (DGGÖ), vol. 19(5), pages 653-661, June.
    • Handle: RePEc:spr:eujhec:v:19:y:2018:i:5:d:10.1007_s10198-017-0910-x
    DOI: 10.1007/s10198-017-0910-x
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    Citations

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    Cited by:

    1. Nishit Dhanji & Werner Brouwer & Cam Donaldson & Eve Wittenberg & Hareth Al‐Janabi, 2021. "Estimating an exchange‐rate between care‐related and health‐related quality of life outcomes for economic evaluation: An application of the wellbeing valuation method," Health Economics, John Wiley & Sons, Ltd., vol. 30(11), pages 2847-2857, November.

    More about this item

    Keywords

    Preference-based methods; Utility; Social care; EQ-5D; ASCOT;
    All these keywords.

    JEL classification:

    • I10 - Health, Education, and Welfare - - Health - - - General

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