变量

(1)

(2)

(3)

RDI

0.0494^***

−0.00667

0.0817^**

(3.068)

(−0.236)

(2.117)

SIZE

−0.00412^***

0.00205

0.0160^***

(−3.067)

(0.967)

(2.822)

TOP1

0.0296^***

0.0380^**

0.0861^***

(4.015)

(2.066)

(2.766)

TAT

−0.00332

−0.00764

−0.0101

(-0.868)

(−1.135)

(−0.885)

GRO

0.554^***

0.322^***

0.254^***

(19.74)

(5.321)

(2.649)

Constant

0.0919^***

−0.0130

−0.275^**

(3.171)

(−0.296)

(−2.365)

YEAR

控制

控制

控制

N

315

227

133

Adj-R2

0.772

0.325

0.316