lnpatent

(1)

(2)

(3)

(4)

OLS

Poisson

distortion

−0.005***

−0.004***

−0.002***

−0.002***

(0.001)

(0.001)

(0.000)

(0.000)

avek

0.011***

0.005***

(0.000)

(0.000)

lnl

0.020***

0.008***

(0.001)

(0.000)

lnage

−0.004***

−0.002***

(0.001)

(0.000)

expdummy

0.006***

0.002***

(0.001)

(0.000)

profit_rate

0.000*

0.000

(0.000)

(0.000)

cons

0.000

0.000

(0.000)

(0.000)

private

0.002*

0.000

(0.001)

(0.001)

foreign

0.007*

0.001

(0.004)

(0.002)

Firm + YearFE

Y

Y

Y

Y

N

1,485,376

1,480,976

1,485,376

1,480,976

R²

0.511

0.513

0.467

0.469