Table 9.

Instrumental variable method: IV-probit regression.

	(1)	(2)	(3)
Household health risks	−0.109*** (−69.25)	−0.120*** (−78.91)	−0.408*** (−22.33)
Social medical insurance		−0.727*** (−17.64)	−1.514*** (−17.14)
Household health risks × social medical insurance			0.332*** (16.50)

Control variables	Control	Control	Control
Size of sample	34,603	34,603	34,603
One stage F test value of p	0.0000	0.0000	0.0000
Wald test Chi2	15,473.47	16,269.62	15,482.26
(p-value)	0.0000	0.0000	0.0000

t statistics in parentheses; *p < 0.05, **p < 0.01, ***p < 0.001.