Sepehri Ardeshir, Sarma Sisira, Simpson Wayne
Department of Economics, University of Manitoba, Canada.
Health Econ. 2006 Jun;15(6):603-16. doi: 10.1002/hec.1080.
Many low-income countries are implementing non-profit medical insurance to increase access to health services, especially among low-income households, and to raise additional revenue for financing public health services. This paper estimates the effect of insurance on out-of-pocket health expenditures using the Vietnam Living Standards Surveys for 1993 and 1998 and appropriate models for panel data. Our findings suggest that health insurance reduces health expenditure when unobserved heterogeneity is accounted for. Failure to capture unobserved heterogeneity produces contrary results that are consistent with previous cross-sectional studies in the literature. Health insurance is found to reduce out-of-pocket expenditure between 16 and 18% and the reduction in expenditure is more pronounced for individuals with lower incomes. At mean income, the effect of health insurance is to reduce health expenditures between 28 and 35%.
许多低收入国家正在实施非营利性医疗保险,以增加获得卫生服务的机会,特别是在低收入家庭中,并为公共卫生服务融资筹集额外收入。本文利用1993年和1998年的越南生活水平调查以及适用于面板数据的模型,估计了保险对自付医疗支出的影响。我们的研究结果表明,当考虑到未观察到的异质性时,医疗保险会降低医疗支出。未能捕捉到未观察到的异质性会产生与文献中先前的横断面研究一致的相反结果。研究发现,医疗保险可将自付支出降低16%至18%,且支出减少对低收入者更为明显。在平均收入水平上,医疗保险的作用是将医疗支出降低28%至35%。