Lei Xiaoyan, Lin Wanchuan
China Center for Economic Research, Peking University, Beijing, China.
Health Econ. 2009 Jul;18 Suppl 2:S25-46. doi: 10.1002/hec.1501.
This paper explores the impact of the New Cooperative Medical Scheme (NCMS), a newly adopted public health insurance program in rural China. Using a longitudinal sample drawn from the China Health and Nutrition Survey (CHNS), we employed multiple estimation strategies (individual fixed-effect models, instrumental variable estimation, and difference-in-differences estimation with propensity score matching) to correct the potential selection bias. We find that participating in the NCMS significantly decreases the use of traditional Chinese folk doctors and increases the utilization of preventive care, particularly general physical examinations. However, we do not find that the NCMS decreases out-of-pocket expenditure nor do we find that it increases utilization of formal medical service or improves health status, as measured by self-reported health status and by sickness or injury in the past four weeks. Our study indicates that despite the wide expansion of coverage, the impact of the NCMS is still limited.
本文探讨了新型农村合作医疗制度(新农合)这一中国农村地区新采用的公共医疗保险计划的影响。利用从中国健康与营养调查(CHNS)中抽取的纵向样本,我们采用了多种估计策略(个体固定效应模型、工具变量估计以及倾向得分匹配的双重差分估计)来纠正潜在的选择偏差。我们发现,参加新农合显著减少了对中医民间医生的使用,并增加了预防性保健的利用率,尤其是常规体检。然而,我们没有发现新农合降低了自付费用,也没有发现它增加了正规医疗服务的利用率或改善了健康状况,这是通过自我报告的健康状况以及过去四周内的疾病或受伤情况来衡量的。我们的研究表明,尽管覆盖面大幅扩大,但新农合的影响仍然有限。