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改革三十多年,我国居民收入大幅度提高,但是收入差距却不断扩大,收入及收入分配对健康及健康不平等的影响备受关注。本文利用CHARLS(2008)年的数据研究收入以及收入差距对健康的影响。研究结果表明,(1)收入水平高的人会拥有更高的健康水平,健康不平等确实存在;(2)收入差距对健康状况的影响是倒“U”型,也就是说,当收入差距较高时,收入差距对健康的影响为负向;(3)健康和收入是非线性的关系,即健康投资呈现出边际收益递减的特征。
Over the past thirty years of reform, the income of our residents has increased substantially. However, the income gap has been constantly expanding. The impact of income and income distribution on health and inequality has drawn much attention. In this paper, CHARLS (2008) data are used to study the health effects of income and income disparities. The results show that (1) people with high income level have higher health level, and health inequality does exist; (2) the impact of income gap on health status is “U” type, that is, when When the income gap is high, the impact of the income gap on health is negative. (3) The relationship between health and income is non-linear, that is, the health investment shows the characteristics of diminishing marginal returns.