变量

模型1

模型2

模型3

模型4

HCE

0.4432649** (5.51)

SCE

0.292** (8.99)

RCE

0.0404* (2.52)

ICE

0.0656** (5.79)

AGE

−0.244** (−5.43)

−0.353** (−7.85)

−0.405** (−7.306.50)

−0.343** (−7.68)

SIZE

1.020** (4.86)

1.011** (4.70)

1.572** (6.50)

1.384** (6.91)

-cons

−21.342 ** (−4.98)

−20.500** (−4.62)

−32.084** (−6.51)

−28.419** (−6.90)

R²

0.531

0.492

0.348

0.515

F

41.070 **

44.44**

31.57**

39.18**

obs

1,444

1,444

1,444

1,444