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目的评估广西壮族自治区伤寒流行地区居民对Vi多糖疫苗的支付意愿,为开展疫苗推广活动提供依据。方法应用条件价值法(Contingent Valuation Method,CVM)评估居民对伤寒Vi多糖疫苗的支付阈值,使用Prob-it模型进行“价格-接受率”曲线拟合。结果广西壮族自治区伤寒流行地区居民对Vi多糖疫苗的“价格-接受率”模型为:p=Probit-1(0.88952-0.46296X),平均支付意愿为10.41元,95%可信区间为6.67~16.24元。结论在广西壮族自治区伤寒流行地区,Vi多糖疫苗定价应在10元左右,CVM可较好评估居民对疫苗的支付意愿。
Objective To assess the willingness of residents to pay for Vi polysaccharide vaccine in the endemic areas of typhoid fever in Guangxi Zhuang Autonomous Region and provide the basis for the promotion of vaccine. Methods The contingent Valuation Method (CVM) was used to evaluate the residents’ threshold of payment for typhoid Vi polysaccharide vaccine. The Prob-it model was used to fit the price-acceptance rate curve. Results The “price-acceptance rate” model for residents with typhoid fever in Guangxi Zhuang Autonomous Region was p = Probit-1 (0.88952-0.46296X), with an average willingness to pay of 10.41 yuan and a 95% confidence interval of 6.67 ~ 16.24 yuan. Conclusions In the endemic areas of typhoid fever in Guangxi Zhuang Autonomous Region, the price of Vi polysaccharide vaccine should be around 10 yuan. CVM can better evaluate residents’ willingness to pay for vaccines.