变量

Estimate

Std.Error

t-value

Pr (>|t|)

intercept

−7.357648

0.727731

−10.1104

<2.2e−16^***

Log(GRP)

0.33802

0．090680

0.3728

0.709329

Log(EF)

0.215444

0.068180

3.1599

0.001578^**

Log(PFE)

0.345263

0.045341

7.6148

2.642e−14^***

Log(PR)

0.400021

0.094095

4.2512

2.126e−05^***