Table 3 Superposition policy test.

From: Government intervention, industrial structure, and energy eco-efficiency: an empirical research on new energy demonstration in cities

 

(5)

(6)

(7)

(8)

\(du \times dt\)

0.0487** (0.0203)

0.0379* (0.0202)

0.0256*** (0.0078)

0.0224*** (0.0078)

Low carbon

0.0031 (0.0210)

 

0.0007 (0.0081)

 

Carbon trading

 

− 0.1644*** (0.0279)

 

− 0.0442*** (0.0115)

LnFE

  

0.0484*** (0.0129)

0.0490*** (0.0128)

LnIND

  

0.0191* (0.0056)

0.0094* (0.0056)

LnPGDP

  

0.3348*** (0.0253)

0.3106*** (0.0260)

LnURBAN

  

− 0.0440** (0.0188)

− 0.0589*** (0.0191)

LnFDI

  

0.0115*** (0.0021)

0.0109*** (0.0021)

LnTI

  

0.0234*** (0.0058)

0.0227*** (0.0058)

Constant

− 0.8253*** (0.0634)

− 0.8325*** (0.0624)

− 3.5386*** (0.2407)

− 3.2521*** (0.2508)

Year fixed effects

Yes

Yes

Yes

Yes

City fixed effects

Yes

Yes

Yes

Yes

Observations

3540

3540

3540

3540

\(R^{2}\)

0.6554

0.6590

0.7656

0.7667

  1. The values in parentheses refer to the standard error values of the regression coefficients; ***, **, and * refer to the significance levels of 1%, 5%, and 10%, respectively.
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