Table 3 Influence of the B&R policy on the GD level of construction enterprises—DID.

From: How does the Belt and Road policy affect the level of green development? A quasi-natural experimental study considering the CO2 emission intensity of construction enterprises

Variable

(1)

(2)

(3)

(4)

(5)

(6)

TREATED

−1.21858***

(−2.72)

−1.27929***

(−2.80)

−1.83662***

(−3.75)

−1.44010***

(−2.78)

−1.45242***

(−2.76)

−1.40504***

(−2.63)

TIME

0.32276***

(3.97)

0.207998*

(1.89)

0.21765**

(2.02)

0.256355**

(2.40)

0.257908**

(2.42)

0.262988**

(2.48)

TREATED × TIME

−0.345619***

(−3.32)

−0.324080***

(−3.10)

−0.415850***

(−3.93)

−0.463279***

(−4.42)

−0.439914***

(−4.18)

−0.445729***

(−4.25)

Cgdp

 

0.733341

(1.54)

2.90335***

(3.73)

4.63256***

(4.98)

4.72153***

(5.08)

4.44386***

(4.66)

R&D

  

−1.17095***

(−3.47)

−1.59397***

(−4.45)

−1.5921***

(−4.45)

−1.68158***

(−4.64)

UC

   

1.91731***

(3.23)

1.811109***

(3.01)

2.02155***

(3.27)

Sti

    

0.123214

(1.75)

0.117180*

(1.67)

LP

     

0.569588

(1.41)

_cons

1.80164***

(5.16)

1.25605**

(2.51)

−0.010755

(−0.02)

−5.25282***

(−3.04)

−5.16875***

(−2.98)

−5.62108***

(−3.19)

N

307

307

307

307

307

307

R²

0.2592

0.2388

0.2356

0.1629

0.1597

0.1698

  1. ***, ** and * denote the significance levels of 1%, 5% and 10%, respectively, and the values in parentheses are t-values.