model

(4)

(5)

(6)

(7)

(8)

(9)

The dependent variable

Size

Indep

Common

RDSpend

RDSpend

RDSpend

0.0141***

0.0339***

0.588**

0.256***

0.256***

0.257***

(7.28)

(7.28)

(1.76)

(5.27)

(5.27)

(5.34)

N

5470

5470

5470

5470

5470

5470