"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.

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July, 2009

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info:eu-repo/semantics/OpenAccess


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Contingent valuation double-bounded dichotomous choice Patient proxy anchoring structural shift influenza MESH: Adult MESH: Choice Behavior MESH: Proxy MESH: Spouses MESH: Female MESH: Financing, Personal MESH: France MESH: Humans MESH: Influenza, Human MESH: Male MESH: Models, Econometric MESH: Patient Acceptance of Health Care -bio]/Santé publique et épidémiologie -fin]/Pricing of Securities [q-fin.PR]


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Michaël Schwarzinger et al., « "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. », Hyper Article en Ligne - Sciences de l'Homme et de la Société, ID : 10.1016/j.jhealeco.2009.03.002


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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.

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