China’s New Environmental Protection Law and Green Innovation: Evidence from Prefecture-Level Cities

Table 4

Robustness tests.

	(1)	(2)	(3)	(4)	(5)
	Ginnovation	Ginnovation	Ginnovation1	Ginnovation	Ginnovation
Treat × Year2011	0.0011
	(0.0023)
Treat × Year2012	0.0012
	(0.0023)
Treat × Year2013	0.0031
	(0.0023)
Treat × Year2014	0.0034
	(0.0023)
Treat × Year2015	0.0044
	(0.0023)
Treat × Year2016	0.0091
	(0.0023)
Treat × Post		0.0048	0.0026	0.0048	0.0028
		(0.0019)	(0.0010)	(0.0014)	(0.0014)
AGDP	−0.0032	0.0004	−0.0032	−0.0031	0.0036
	(0.0035)	(0.0050)	(0.0026)	(0.0036)	(0.0039)
FDI	0.0292	0.0946	0.0180	0.0276	0.0369
	(0.0425)	(0.0679)	(0.0315)	(0.0433)	(0.0593)
Struct	0.0001	0.0001	0.0000	0.0001	−0.0001
	(0.0002)	(0.0002)	(0.0001)	(0.0002)	(0.0002)
Science	0.0016	0.0002	0.0017	0.0018	0.0033
	(0.0010)	(0.0012)	(0.0007)	(0.0010)	(0.0012)
Industry	−0.0038	−0.0065	−0.0014	−0.0037	−0.0125
	(0.0022)	(0.0032)	(0.0017)	(0.0023)	(0.0035)
POP	−0.0045	0.0021	−0.0085	−0.0042	0.0126
	(0.0068)	(0.0105)	(0.0051)	(0.0069)	(0.0093)
PM25	0.0061	0.0075	0.0064	0.0057	0.0023
	(0.0031)	(0.0044)	(0.0023)	(0.0031)	(0.0035)
Town				0.0000
				(0.0001)
Constant	0.0708	0.0212	0.0643	0.0654	−0.0410
	(0.0581)	(0.0785)	(0.0430)	(0.0590)	(0.0736)
City FE	Yes	Yes	Yes	Yes	Yes
Year FE	Yes	Yes	Yes	Yes	Yes
N	1798	1152	1798	1773	1021
R^2	0.0364	0.0231	0.0824	0.0307	0.0481

Robust standard errors are presented in parentheses., , and indicate statistical significance at the 10%, 5%, and 1% levels, respectively.