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Sample Size Requirements for Discrete-Choice Experiments in Healthcare: a Practical Guide

Author

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  • Esther Bekker-Grob
  • Bas Donkers
  • Marcel Jonker
  • Elly Stolk

Abstract

Discrete-choice experiments (DCEs) have become a commonly used instrument in health economics and patient-preference analysis, addressing a wide range of policy questions. An important question when setting up a DCE is the size of the sample needed to answer the research question of interest. Although theory exists as to the calculation of sample size requirements for stated choice data, it does not address the issue of minimum sample size requirements in terms of the statistical power of hypothesis tests on the estimated coefficients. The purpose of this paper is threefold: (1) to provide insight into whether and how researchers have dealt with sample size calculations for healthcare-related DCE studies; (2) to introduce and explain the required sample size for parameter estimates in DCEs; and (3) to provide a step-by-step guide for the calculation of the minimum sample size requirements for DCEs in health care. Copyright The Author(s) 2015

Suggested Citation

  • Esther Bekker-Grob & Bas Donkers & Marcel Jonker & Elly Stolk, 2015. "Sample Size Requirements for Discrete-Choice Experiments in Healthcare: a Practical Guide," The Patient: Patient-Centered Outcomes Research, Springer;International Academy of Health Preference Research, vol. 8(5), pages 373-384, October.
    • Handle: RePEc:spr:patien:v:8:y:2015:i:5:p:373-384
    DOI: 10.1007/s40271-015-0118-z
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    References listed on IDEAS

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    2. Louviere,Jordan J. & Hensher,David A. & Swait,Joffre D. With contributions by-Name:Adamowicz,Wiktor, 2000. "Stated Choice Methods," Cambridge Books, Cambridge University Press, number 9780521788304, November.
    3. Philips, Hilde & Mahr, Dominik & Remmen, Roy & Weverbergh, Marcel & De Graeve, Diana & Van Royen, Paul, 2012. "Predicting the place of out-of-hours care—A market simulation based on discrete choice analysis," Health Policy, Elsevier, vol. 106(3), pages 284-290.
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