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

Michael Cameron, Peter A. Newman, Surachet Roungprakhon and Riccardo Scarpa
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Peter A. Newman: University of Toronto
Surachet Roungprakhon: Rajamangala University of Technology Phra Nakhon

Working Papers in Economics from 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.

Keywords: HIV vaccine; willingness-to-pay; conjoint analysis; discrete choice; Thailand (search for similar items in EconPapers)
JEL-codes: I19 (search for similar items in EconPapers)
Pages: 12 pages
Date: 2012-09-30
New Economics Papers: this item is included in nep-dcm, nep-hea and nep-sea
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Citations: View citations in EconPapers (1)

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