变量

(1)

(2)

(3)

(4)

(5)

(6)

GER

Grenov₁

GER

Grenov₂

GER

Grenov₃

CEPI

0.126^**

(2.243)

0.126^**

(2.243)

0.126^**

(2.243)

GER

0.145^**

(2.228)

0.138^***

(3.365)

0.119^**

(1.937)

Constant

8.674^***

(3.508)

5.925^***

(6.043)

6.073^***

(3.607)

9.241^***

(4.336)

10.358^***

(3.538)

9.046^**

(2.386)

X_it

Yes

Yes

Yes

Yes

Yes

Yes

Company

Yes

Yes

Yes

Yes

Yes

Yes

Year

Yes

Yes

Yes

Yes

Yes

Yes

N

11,534

11,534

11,534

11,534

11,534

11,534

R²

0.593

0.463

0.456

0.585

0.569

0.463