Willingness to Pay and QALYs: What Can We Learn about Valuing Foodborne Risk?
用瑞典样本的条件估值法，研究人们为降低食源性疾病（非致命但偶有死亡风险）的支付意愿，发现支付意愿随质量调整生命年增加而增加，但增幅递减。
Abstract This paper examines the value of reducing foodborne risk. Previous research on the valuation of health risk has been dominated by the study of mortality risk. However, in most cases foodborne illnesses are non‐fatal, so we focus on individuals' preferences for reducing morbidity risk, while also including a realistic, if remote, chance of death. We use a contingent valuation method on a Swedish sample and we estimate a value of a statistical illness consistent with previous findings in the literature. We also examine how willingness to pay (WTP) varies with the expected change in quality‐adjusted life years (QALYs) and estimate the WTP per QALY. We find that WTP increases with, though less than proportionally to, a change in QALYs. However, our results also suggest that respondents may have found it difficult to evaluate compound risks of both morbidity and mortality simultaneously.