变量

OE

TE

SE

常数项

−0.011

1.202^***

−0.101

(−0.022)

(3.868)

(−0.204)

D

0.536^***

0.299^***

0.36^**

(3.49)

(3.236)

(2.466)

Inv

0.039^**

−0.004

0.042^**

(2.049)

(−0.341)

(2.353)

lnCoop

0.196^***

−0.027^**

0.224^***

(11.031)

(−2.5)

(13.282)

lnStr

−0.266^**

0.063

−0.338^***

(−2.313)

(0.906)

(−3.088)

lnEr

−0.034^**

−0.033^***

−0.015

(−2.556)

(−4.118)

(−1.166)