Internet Development, Collaborative Innovation, and Carbon Emissions

Table 4

Benchmark regression result.

Variable	OLS	General panel	Static SDM	Dynamic SDM
	M1	M2	M3	M4
L.lncg				0.5919
				(12.24)
intel	-0.1068	-0.0261	-0.0074	-0.0155
	(-1.97)	(-1.66)	(-0.25)	(-0.55)
lngdp	1.1407	0.2396	0.4143	0.0769
	(4.05)	(2.34)	(2.93)	(0.61)
open	-0.2791	-0.1749	-0.0723	-0.0761
	(-1.05)	(-1.91)	(-0.61)	(-0.79)
city	3.1234	0.0008	0.1857	0.3212
	(3.62)	(0.00)	(0.34)	(0.70)
lne_c	0.5382	0.9783	0.9666	0.4752
	(4.19)	(9.07)	(8.68)	(4.52)
Wintel			-0.0297	-0.0593
			(-0.85)	(-0.84)
Wlngdp			0.5176	0.2646
			(2.43)	(1.01)
Wopen			0.3648	0.1366
			(2.00)	(0.68)
Wcity			-0.7940	-0.8797
			(-0.97)	(-0.80)
Wlne_c			-0.6259	-0.2716
			(-2.25)	(-0.85)
^2	0.1192	0.0268	0.0317	0.8850
Obs	240	240	240	240

Note: , , and represent 1%, 5%, and 10% significance levels, respectively.