变量

(1)

(2)

ln_GPCP

13.269^***

13.729^***

(6.26)

(6.68)

ln_GPE

7.872^***

(4.27)

Constant

−100.105^***

−203.792^***

(−4.67)

(−5.96)

Observations

206

206

R-squared

0.183

0.245

Ftest

2.29e-09

5.45e-11

r2_a

0.179

0.238

F

39.13

26.61