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The Marginal Willingness-to-Pay for Attributes of a Hypothetical HIV Vaccine

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  • Michael P. Cameron

    ()
    (University of Waikato)

  • Peter A. Newman

    (University of Toronto)

  • Surachet Roungprakhon

    (Rajamangala University of Technology Phra Nakhon)

  • Riccardo Scarpa

    (University of Waikato)

Abstract

This paper estimates the marginal willingness-to-pay for attributes of a hypothetical HIV vaccine using discrete choice modeling. We use primary data from 326 respondents from Bangkok and Chiang Mai, Thailand, in 2008-2009, selected using purposive, venue-based sampling across two strata. Participants completed a structured questionnaire and full rank discrete choice modelling task administered using computer-assisted personal interviewing. The choice experiment was used to rank eight hypothetical HIV vaccine scenarios, with each scenario comprising seven attributes (including cost) each of which had two levels. The data were analyzed in two alternative specifications: (1) best-worst; and (2) full-rank, using logit likelihood functions estimated with custom routines in Gauss matrix programming language. Knowledge of the relative importance of determinants of HIV vaccine acceptability is important to ensure the success of future vaccination programs. Future acceptability studies of hypothetical HIV vaccines should use more finely-grained biomedical attributes, and could also improve the external validity of results by including more levels of the cost attribute.

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File URL: ftp://mngt.waikato.ac.nz/RePEc/wai/econwp/1211.pdf
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Bibliographic Info

Paper provided by University of Waikato, Department of Economics in its series Working Papers in Economics with number 12/11.

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Length: 12 pages
Date of creation: 30 Sep 2012
Date of revision:
Handle: RePEc:wai:econwp:12/11

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Keywords: HIV vaccine; willingness-to-pay; conjoint analysis; discrete choice; Thailand;

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  1. Hausman, Jerry A. & Ruud, Paul A., 1987. "Specifying and testing econometric models for rank-ordered data," Journal of Econometrics, Elsevier, vol. 34(1-2), pages 83-104.
  2. McConnell K. E., 1995. "Consumer Surplus from Discrete Choice Models," Journal of Environmental Economics and Management, Elsevier, vol. 29(3), pages 263-270, November.
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