Different types of industrial agglomeration and green total factor productivity in China: do institutional and policy characteristics of cities make a difference?

Environmental Sciences Europe

Table 5 IV + 2SLS

Variables	(1)	(2)	(3)	(4)	(5)	(6)
	First-stage	Second-stage	First-stage	Second-stage	First-stage	Second-stage
	lnLQ_MAN	lnGML	lnLQ_PS8	lnGML	lnCOAG	lnGML
avlnLQ_MAN	1.010***
	(29.88)
lnLQ_MAN		0.107***
		(2.76)
avlnLQ_PS8			1.016***
			(24.39)
lnLQ_PS8				0.033
				(0.32)
avlnCOAG					1.004***
					(22.35)
lnCOAG						0.267*
						(1.91)
Observations	3934	3934	3934	3934	3934	3934
R-squared		0.396		0.398		0.398
Number of cities	281	281	281	281	281	281
Control variables	Yes	Yes	Yes	Yes	Yes	Yes
City FE	Yes	Yes	Yes	Yes	Yes	Yes
Time FE	Yes	Yes	Yes	Yes	Yes	Yes
Under-identification test		0.000		0.000		0.000
Weak identification test		892.645		594.703		499.593