Table 8 Endogeneity tests for two-way causality.

From: Analysis of the influence and coupling effect of environmental regulation policy tools on industrial green and low-carbon transformation

Variables

(1) lnLGL

(2) lnLGL

(3) lnLGL

(4) lnLGL

(5) lnLGL

(6) lnLGL

lncer

0.088*** (3.933)

0.092*** (4.188)

0.237* (1.838)

0.298 (0.922)

− 0.225* (− 1.837)

− 0.394* (− 1.733)

lncer2

 

− 0.005*** (− 3.558)

 

− 0.024*** (− 3.003)

 

0.023*** (4.518)

lnede

0.089*** (5.514)

0.095*** (5.813)

0.102*** (4.669)

0.117*** (4.363)

0.090*** (5.577)

0.087*** (5.296)

lnfdi

0.011 (0.953)

0.008 (0.742)

0.121** (2.186)

0.113*** (3.105)

0.010 (0.861)

0.011 (0.958)

lnhr

0.030*** (3.425)

0.033*** (3.682)

0.051*** (9.606)

0.046*** (6.602)

0.032*** (3.564)

0.032*** (3.556)

lnul

0.162*** (5.436)

0.161*** (5.425)

0.222*** (7.478)

0.233*** (7.628)

0.162*** (5.445)

0.166*** (5.474)

lnis

− 0.349*** (− 6.683)

− 0.348*** (− 6.689)

− 0.341*** (− 7.803)

− 0.357*** (− 8.468)

− 0.340*** (− 6.421)

− 0.343*** (− 6.450)

Constant

− 1.872*** (− 8.448)

− 2.186*** (− 8.126)

− 2.126*** (− 6.794)

− 0.676 (− 0.426)

− 1.843*** (− 8.114)

− 1.509*** (− 2.835)

Effect of time

Control

Control

Control

Control

Control

Control

Effect of province

Control

Control

Control

Control

Control

Control

Residual error

0.165*** (3.065)

0.175*** (1.326)

0.113** (2.019)

0.184** (2.079)

0.149*** (0.275)

0.179*** (2.901)

F

43.97***

45.29***

62.31***

57.76***

51.02***

72.39***

Sagan

0.765

0.586

0.235

0.379

0.584

0.329

Observations

720

720

720

720

720

720

R-squared

0.809

0.817

0.810

0.812

0.809

0.811

  1. *, ** and *** represent the significance level of 10%, 5% and 1%, respectively; The z-values are reported in parentheses; Sargan report p-values.