中文摘要：

目的：测算宁波地区新型农村合作医疗的不同贫困线水平。方法：数据来源于2009年宁波市合作医疗专．项调查，采用扩展线性支出系统法测算不同贫困线水平，井利用收入中位数与贫困线计算就医经济风险临界线。结果：宁波地区的生存线为年人均3644．689元，基本生活消费需求线一为5326．204元，基本生活消费需求线二为5389．322元。基本生活消费需求线三为6945．135元，就医经济风险临界线一为4755．31元，就医经济风险临界线二为3010．68元。结论：宁渡地区的贫困线高于全国水平，测算的贫困线及就医经济风险临界线结果为宁波地区的因病致贫及就医经济风险的分析提供了基础。

英文摘要：

Objective： To calculate the different levels of poverty line of the new rural cooperative medical system in Ningbo. Methods： The data came from special investigation of cooperative medical system in Ningbo in 2009. The model of extended linear expenditure system （ELES） was used to estimate the local＇s poverty line, and then poverty line and per capita income were used to cal- culate the threshold of the economic risk for medical service. Results： Sample area＇ s survival line was 3 644.689 yuan per capita, basic living needs line 5 326.204 yuan per capita, basic living needs line Ⅱ 5 389.322 yuan per capita, basic living needs line Ⅲ 6 9452135 yuan per capita, the corresponding risk threshold line Ⅰ 4 755.31 yuan, and the corresponding risk threshold line Ⅱ 3 010.68 yuan. Conclusion： The poverty line in Ningbo is higher than the average level of the county. The poverty line and corresponding risk thresh- old line can take as a reference for the analysis critical line of the poverty because of illness for rural residents and of the economic risk for medical service in Ningbo city.