"If you have the flu symptoms, your asymptomatic spouse may better answer the willingness-to-pay question". Evidence from a double-bounded dichotomous choice model with heterogeneous anchoring

Michaël Schwarzinger (), Fabrice Carrat () and Stéphane Luchini ()
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Michaël Schwarzinger: ESIM - Epidémiologie des maladies infectieuses et modélisation - UPMC - Université Pierre et Marie Curie - Paris 6 - INSERM - Institut National de la Santé et de la Recherche Médicale, Center for Health Policy - Stanford University
Fabrice Carrat: ESIM - Epidémiologie des maladies infectieuses et modélisation - UPMC - Université Pierre et Marie Curie - Paris 6 - INSERM - Institut National de la Santé et de la Recherche Médicale
Stéphane Luchini: GREQAM - Groupement de Recherche en Économie Quantitative d'Aix-Marseille - EHESS - École des hautes études en sciences sociales - AMU - Aix Marseille Université - ECM - École Centrale de Marseille - CNRS - Centre National de la Recherche Scientifique

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Abstract: The small sample size of contingent valuation (CV) surveys conducted in patients may have limited the use of the single-bounded (SB) dichotomous choice format which is recommended in environmental economics. In this paper, we explore two ways to increase the statistical efficiency of the SB format: (1) by the inclusion of proxies in addition to patients; (2) by the addition of a follow-up dichotomous question, i.e. the double-bounded (DB) dichotomous choice format. We found that patients (n=223) and spouses (n=64) answering on behalf of the patient had on average a similar willingness-to-pay for earlier alleviation of flu symptoms. However, a patient was significantly more likely to anchor his/her answer on the first bid as compared to a spouse. Finally, our original DB model with shift effect and heterogeneous anchoring reconciled the discrepancies found in willingness-to-pay statistics between SB and DB models in keeping with increased statistical efficiency.

Keywords: Contingent valuation; double-bounded dichotomous choice; Patient; proxy; anchoring; structural shift; influenza (search for similar items in EconPapers)
Date: 2009-07
Note: View the original document on HAL open archive server: https://inserm.hal.science/inserm-00636179
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Citations: View citations in EconPapers (5)

Published in Journal of Health Economics, 2009, 28 (4), pp.873-84. ⟨10.1016/j.jhealeco.2009.03.002⟩

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Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:inserm-00636179

DOI: 10.1016/j.jhealeco.2009.03.002

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