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Validity and Reliability of Willingness-to-Pay Estimates: Evidence from Two Overlapping Discrete-Choice Experiments

Author

Listed:
  • Harry Telser

    (Socioeconomic Institute, University of Zurich)

  • Karolin Becker

    (Plaut Economics, Olten)

  • Peter Zweifel

    (Socioeconomic Institute, University of Zurich)

Abstract

Discrete-choice experiments, while becoming increasingly popular, have rarely been tested for validity and reliability. This contribution purports to provide some evidence of a rather unique type. Two surveys designed to measure willingness-to-accept (WTA) for reform op-tions in Swiss health care and health insurance are used to provide independent information with regard to two elements of reform. The issue to be addressed is whether WTA values converge although the three overlapping attributes (a more restrictive drug benefit, a delayed access to medical innovation, and a change in the monthly insurance premium) are embedded in widely differing choice sets. Experiment A contains rather radical health system reform options, while experiment B concentrates on more familiar elements such as copayment and the benefit catalogue. While mean WTA values differ between experiments, they tend to vary in similar ways, suggesting at least theoretical validity and reliability.

Suggested Citation

  • Harry Telser & Karolin Becker & Peter Zweifel, 2004. "Validity and Reliability of Willingness-to-Pay Estimates: Evidence from Two Overlapping Discrete-Choice Experiments," SOI - Working Papers 0412, Socioeconomic Institute - University of Zurich, revised Mar 2008.
    • Handle: RePEc:soz:wpaper:0412
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    File URL: https://www.econ.uzh.ch/apps/workingpapers/wp/wp0412.pdf
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    References listed on IDEAS

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    Cited by:

    1. Charles Cunningham & Ken Deal & Yvonne Chen, 2010. "Adaptive Choice-Based Conjoint Analysis," The Patient: Patient-Centered Outcomes Research, Springer;International Academy of Health Preference Research, vol. 3(4), pages 257-273, December.
    2. Axel Mühlbacher & Matthias Nübling, 2010. "Analysis of Patients’ Preferences," The Patient: Patient-Centered Outcomes Research, Springer;International Academy of Health Preference Research, vol. 3(4), pages 285-294, December.
    3. Anna Alberini & Milan Ščasný, 2021. "On the validity of the estimates of the VSL from contingent valuation: Evidence from the Czech Republic," Journal of Risk and Uncertainty, Springer, vol. 62(1), pages 55-87, February.
    4. Axel Mühlbacher & Uwe Junker & Christin Juhnke & Edgar Stemmler & Thomas Kohlmann & Friedhelm Leverkus & Matthias Nübling, 2015. "Chronic pain patients’ treatment preferences: a discrete-choice experiment," The European Journal of Health Economics, Springer;Deutsche Gesellschaft für Gesundheitsökonomie (DGGÖ), vol. 16(6), pages 613-628, July.

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    More about this item

    Keywords

    willingness-to-pay; discrete choice experiments; validity; reliability; framing effects;
    All these keywords.

    JEL classification:

    • C35 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Discrete Regression and Qualitative Choice Models; Discrete Regressors; Proportions
    • C93 - Mathematical and Quantitative Methods - - Design of Experiments - - - Field Experiments
    • I11 - Health, Education, and Welfare - - Health - - - Analysis of Health Care Markets

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