关 键 词 ：健康支出；收入；Tobit 模型；收入弹性学科分类：经济学--劳动经济学
The health problems of middle-aged and older people have received more and more attention, and more and more scholars have begun to study the health consumption of middle-aged and older people. In this study, we explore the relationship between income and health expenditure by using Harmonized CHARLS data, finding that there has significant effect of income on health expenditure of respondents, and income elasticity of health expenditure is approximately 0.023, which implies that health care is still a necessity for respondents.
In addition, because there are quite a few health expenditures that are zero, hence we consider using Tobit model for regression to analyze the influencing factors of respondent's health expenditure. We explore both Tobit analysis of OLS model and random Tobit analysis, and present the marginal effects. The results reveal that the effect of household income on health expenditure is significant, as well as pension income and transfer income.