model

(1)

(2)

(3)

(7)

(8)

(9)

The dependent variable

Size

Indep

Common

R&D

R&D

R&D

0.242***

0.581***

0.288**

0.475***

1.141***

0.268**

(20.27)

(20.27)

(2.41)

(10.41)

(10.41)

(2.18)

N

5470

5470

5470

5470

5470

5470