Fig 1.
Flow chart of this analysis based on CHARLS.
Table 1.
Definitions and attributes of dependent, independent and covariate variables.
Table 2.
Age analysis of independent and dependent variables.
Table 3.
Results of OSL.
Table 4.
Balance test results.
Fig 2.
Kernel density plots before and after matching.
Table 5.
The result of ATT.
Table 6.
Results of the Bootstrap test.
Table 7.
ATE estimates across PSM, IPW, and Doubly Robust methods.