[Retracted] Analysis of Stock Market Opening and Environment Protecting Information with Computational Technologies: Evidence from China

Table 9

Placebo test.

Variables	(1)	(2)	(3)	(4)
	Disclose	Disclose	Disclose	Disclose
Treat ∗ Post1	0.027	0.129
	(0.18)	(0.93)
Treat ∗ Post2			−0.349	−0.100
			(−1.51)	(−0.50)
Control variable	Yes	Yes	Yes	Yes
Industry	Yes	Yes	Yes	Yes
Year	Yes	Yes	Yes	Yes
Constant	0.169	2.082	−4.699	1.479
	(0.12)	(3.48)	(−2.50)	(2.30)
Observations	2,112	2,112	1,086	1,086
Pseudo R^2	0.0681	0.0587	0.0817	0.0387

, , and .