Table 5.

Results of heterogeneous analysis.

Variables	Region difference			Age difference
	Eastern	Central	Western	Younger elderly	Advanced elderly
	(1)	(2)	(3)	(4)	(5)
Basic medical insurance	−0.027***	−0.015	−0.004	−0.023***	−0.013
	(0.008)	(0.010)	(0.012)	(0.006)	(0.028)
Control variables	Yes	Yes	Yes	Yes	Yes
Constant	1.369***	1.333***	1.240***	1.351***	1.233***
	(0.033)	(0.040)	(0.048)	(0.023)	(0.119)
Observations	2,159	1,258	1,104	4,317	204
R–squared	0.395	0.362	0.263	0.367	0.475

^***p ≤ 0.01; Standard errors are in parentheses.