Table 15 Whether it is Urban Scale heterogeneity analysis regression results.

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

 

(1) Type ii cities

(2) Medium-scale cities

(3) Large-scale cities

(4) Super-large-scale cities

Panel A:\(VSD\)

 \(SCCdid\)

 − 0.300

 − 0.401

 − 1.617***

 − 2.546

(− 0.80)

(− 1.71)

(− 4.77)

(− 1.63)

 \({R}^{2}\)

0.7977

0.8672

0.9437

0.7374

Panel B:\(lnEFD\)

 \(SCCdid\)

0.407

 − 0.194***

 − 0.225**

0.0227

(1.49)

(− 3.53)

(− 2.66)

(0.12)

 \({R}^{2}\)

0.8584

0.7032

0.6802

0.9211

Panel C:\(lnso2\)

 \(SCCdid\)

0.795

0.0221

 − 0.262**

 − 0.0117

(1.72)

(0.38)

(− 2.80)

(− 0.04)

 \(Control\)

\(TRUE\)

\(TRUE\)

\(TRUE\)

\(TRUE\)

\( YearFE\)

\(TRUE\)

\(TRUE\)

\(TRUE\)

\(TRUE\)

\( City FE\)

\(TRUE\)

\(TRUE\)

\(TRUE\)

\(TRUE\)

 \(N\)

134

2618

1086

117

\( {R}^{2}\)

0.8428

0.7935

0.7900

0.9007

  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.