(1)

VARIABLES

FE

Log_all

0.004051^**

(0)

patent

0.0548^***

(0.000185)

RD

0.00707^***

(0.000186)

Constant

0.126^***

(0.00311)

Observations

1269

Number of t

10

Hausman

10.17

p-value

0.00420