Table 1.

Names and definitions of main variables.

Variables	Variable meaning
RIF_CI	Recentralization impact index of health inequality, which is calculated according to the health status and income level ranking of the sample, and then the health concentration index is recentralized by using the recentralization influence function.
Public Hospital Reform	Coverage of public hospital reform. If it is overridden, the value is 1, and if it is not overridden, the value is 0.
Urban	The value for urban areas is 1 and for rural areas is 0.
Age	Age of the respondents.
Gender	The value for male is 1, for female is 0.
Marital Status	The value is 1 for single; 2 for married; 3 for dating; 4 for divorced; 5 for widowed.
Years of Schooling	Number of years of schooling of the respondents.
Basic Medical Insurance	For those who have basic domestic medical insurance, the value is 1.
Family size	Number of family members.
District	The value is 0 in the eastern region, 1 in the central region, and 2 in the western region.
Lngdp	Logarithmic value of Gross Domestic Product (GDP).
Lntech	Logarithm of the number of medical technicians per 1,000 population.
Ln_bmi_cz	Instrumental variable whose value is the logarithm of the cumulative balance of basic health insurance for urban workers in the previous year.
Mi	For those who have basic domestic medical insurance, the value is 1.