Table 3 Results of the robust test.

From: The impact of China’s artificial intelligence development on urban energy efficiency

Model

(1)

(2)

(3)

(4)

DV

EEt

EEt

EEt+1

EEt+2

AI

0.403***

0.051***

0.045***

0.041***

(17.529)

(7.007)

(6.369)

(5.775)

Density

0.058*

0.017

0.028**

0.027**

(2.012)

(1.643)

(3.008)

(2.901)

Structure

−1.024***

−0.187*

−0.090

−0.027

(−4.925)

(−2.040)

(−1.067)

(−0.302)

pgdp

0.094**

0.059***

0.066***

0.062***

(2.364)

(3.562)

(4.447)

(4.049)

so2

0.071***

−0.013*

−0.018**

−0.017**

(4.754)

(−2.084)

(−2.810)

(−2.424)

Energy

−0.841***

−0.093***

−0.078***

−0.070***

(−34.961)

(−11.122)

(−8.850)

(−7.553)

Contant

10.774***

1.066***

0.805***

0.742***

(24.969)

(6.856)

(5.159)

(4.490)

Province FE

YES

YES

YES

YES

Year FE

YES

YES

YES

YES

N

4177

2900

3895

3613

R2

0.508

0.511

0.462

0.430

  1. Parentheses with standard errors clustered at the city and calendar year. ***, ** and * indicate significance at the 1, 5, and 10% levels, respectively.