[Retracted] Foreign Direct Investment, Regional Innovation, and Green Economic Efficiency: An Empirical Test Based on the Investigation of Intermediary Effect and Threshold Effect

Table 3

Benchmark regression test.

Variables	PLS	PLS_FE	GMM	GMM	GMM
	1	2	3	4	5
LnGECMit−1	0.8749	0.3441	0.6892	0.6340	0.5170
	[29.68]	[5.57]	[7.36]	[5.16]	[5.16]
LnFDIit	0.0029	−0.0075	0.0669	—	0.0587
	[0.58]	[−0.60]	[3.06]	—	[2.38]
LnINit	0.0227	−0.0531	—	0.0507	0.0394
	[2.60]	[−2.00]	—	[3.78]	[1.73]
LnSECDit	−0.0478	0.1285	−0.1456	−0.1019	−0.1792
	[−3.06]	[1.38]	[−3.74]	[−3.11]	[−4.24]
LnRDit	0.0034	0.0011	0.0006	0.0014	−0.0001
	[0.94]	[0.32]	[0.11]	[0.34]	[−0.03]
LnGGPAYit	−0.0033	−0.0064	0.0472	−0.0026	0.0253
	[−0.15]	[−0.10]	[1.18]	[−0.07]	[0.57]
CONS	0.1334	−0.6437	0.4876	0.324	0.5823
	[1.08]	[−1.62]	[2.25]	[1.56]	[2.41]
AR(2)	—	—	0.2100	−0.3000	−0.0700
	—	—	(0.834)	(0.766)	(0.945)
Hansen	—	—	25.7700	24.5500	23.7100
	—	—	(0.174)	(0.219)	(0.208)
Individual effects	—	Control	Control	Control	Control
F	266.0000	8.4900	30.4900	53.2800	28.6400
	(≤0.001)	(≤0.001)	(≤0.001)	(≤0.001)	(≤0.001)

(1) The values in [] are t statistical value of regression coefficient in the same table below; the values in () are value of corresponding test statistics in the same table below; (2) , , and indicate significant significance at 1%, 5%, and 10%, respectively. All tables are the same.