Comparison of cost-of-illness with willingness-to-pay estimates to avoid shigellosis: evidence from China
Comparison of cost-of-illness with willingness-to-pay estimates to avoid shigellosis: evidence from China
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DOI：
10.1093/heapol/czm047
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发表时间：
2008-03-01
影响因子：
3.2
通讯作者：
Whittington, Dale
中科院分区：
文献类型：
--
作者：
Guh, Soyeon;Chen Xingbao;Whittington, Dale
以前的研究表明，疾病成本（COI）措施低于概念上正确的支付意愿（WTP）措施的疾病预防的经济效益。我们比较了中国农村地区与志贺氏菌病相关的支付意愿的COI与陈述偏好估计。在培养确诊后第7天和第14天通过面对面访谈收集COI数据。WTP，以避免类似的事件，受访者刚刚经历了使用滑动规模的支付卡引起。与以前的研究结果相反，平均COI估计（2002年PPP调整US28.2）近似于WTP的上限估计，而不是下限。对COI和WTP之间相似性的一种解释是，志贺氏菌病的预防支出和由于疼痛和痛苦造成的负效用较低。05岁儿童避免额外病例的支付意愿高于成人。此外，儿童的平均COI（2002年购买力平价调整后为28.4美元）与支付意愿的下限估计值（2002年购买力平价调整后为16.4美元）相似，并且在支付意愿范围内。由于与儿童另一次发作相关的金钱损失很小，照顾者较高的支付意愿可能归因于儿童疼痛和痛苦造成的疾病负效用。这些发现表明，对于某些疾病，COI可能近似于更全面的经济效益衡量标准。
Previous studies have shown that cost of illness (COI) measures are lower than the conceptually correct willingness-to-pay (WTP) measure of the economic benefits of disease prevention. We compare COI with stated preference estimates of WTP associated with shigellosis in a rural area of China. COI data were collected through face-to-face interviews at 7 and 14 days after culture-confirmed diagnosis. WTP to avoid an episode similar to the one the respondent just experienced was elicited using a sliding-scale payment card. In contrast to previous studies findings, average COI estimates (2002 PPP adjusted US28.2) approximate an upper bound estimate of WTP, rather than a lower bound. One explanation for the similarity between COI and WTP is that preventive expenditures and disutility due to pain and suffering are low for shigellosis. WTP to avoid additional cases in children aged 05 years is higher than in adults. Also, average COI (2002 PPP adjusted US28.4) for children is similar to a lower bound estimate of WTP (2002 PPP adjusted US16.4) and lies within the WTP range. Because the monetary loss associated with another episode in children is small, caregivers higher WTP may be attributable to the disutility of illness due to the childrens pain and suffering. These findings suggest that for some diseases, COI may approximate more comprehensive measures of economic benefits.