变量

Policy

3.230^***

(3.467)

SA

−0.055

(−0.162)

interact

−0.228^**

(−3.200)

DAR

0.238

(0.712)

Size

0.343

(1.076)

Year

−0.023

(−0.529)

R&DPR

0.067

(0.440)

_cons

−83.99

(−0.362)

N

45

r2_a

0.165