Table 4 Parallel trend test.

From: The influence and acting pattern of China's national carbon emission trading scheme on regional ecologicalization efficiency of industry

Y

Coef

Control variable

Fixed effect

N

pre_6

0.015711 (0.86)

Yes

yes

390

pre_5

− 0.0060199 (0.946)

Yes

Yes

390

pre_4

0.0093869 (0.916)

Yes

Yes

390

pre_3

0.0361118 (0.685)

Yes

Yes

390

pre_2

− 0.0343934 (0.699)

Yes

Yes

390

time_1

0.0959477 (0.281)

Yes

Yes

390

time_2

0.1176363 (0.186)

Yes

Yes

390

time_3

0.2500371*** (0.005)

Yes

Yes

390

time_4

0.2693522*** (0.003)

Yes

Yes

390

time_5

0.254908*** (0.004)

Yes

Yes

390

time_6

0.3745259*** (0.000)

Yes

Yes

390

  1. ***, ** and * represent significance levels of 1%, 5% and 10% respectively, with P values in brackets.
Back to article page