Table 5 PSM-DID regression results of VSD, SO2 and EFD.

From: The impact of smart city construction (SCC) on pollution emissions (PE): evidence from China

 

(1)

(2)

(3)

\(VSD\)

\(SO2\)

\(EFD\)

\(SCCdid\)

 − 1.0737***

 − 0.1629**

 − 0.2737**

 

(− 3.7708)

(− 2.6164)

(− 3.0112)

\(lngdp\)

1.2971***

 − 2.9346***

 − 2.0700***

 

(5.9570)

(− 14.1920)

(− 6.3492)

\(lnpergdp\)

0.9974***

2.4344***

1.7632***

 

(6.2393)

(11.3532)

(4.9973)

\(urban\)

 − 0.0885***

 − 0.0133***

 − 0.0261***

 

(− 20.1885)

(− 4.7729)

(− 5.7743)

\(fdigdp\)

 − 1.0591

5.1318***

 − 2.6654**

 

(− 0.3974)

(6.0858)

(− 2.3965)

\(gardon\)

1.3296***

0.3009***

 − 0.0318

 

(7.1662)

(6.9948)

(− 0.6015)

\(secagg\)

17.3918***

 − 1.1458***

 − 0.5113***

 

(50.7185)

(− 9.3107)

(− 3.0904)

\(N\)

4080

4064

4064

\({R}^{2}\)

0.7628

0.9077

0.8700

  1. The values in parentheses refer to the t-values of the regression coefficients; ***, **, and * refer to the significance levels of 1%, 5%, and10%, respectively.