模型1

模型2

常数项

−40.385 (−1.442)

−61.938 (−2.578)

CSR

1.040 (4.616)

3.047 (6.174)

CSR²

−0.073 (−4.403)

SIZE

1.386 (0.951)

1.989 (1.615)

STATE

5.078 (1.372)

2.505 (0.792)

RD

0.302 (0.333)

0.274 (0.361)

LEV

−23.553 (−1.694)

−18.924 (−1.614)

R方

0.325

0.373

调整后R方

0.272

0.327