变量

(1)

(2)

(3)

(4)

dig

0.504^***

(0.253)

0.313^***

(0.050)

0.042^**

(0.023)

0.205^***

(0.066)

lnfdi

0.023^*

(0.006)

−0.206^*

(0.109)

0.043^*

(0.057)

open

0.085^**

(0.043)

−0.007^*

(0.040)

0.017^**

(0.257)

chpd

0.024^***

(0.008)

0.027^*

(0.008)

0.018^**

(0.010)

hc

0.860^*

(0.138)

−0.253^*

(0.205)

0.017^**

(0.041)

_cons

0.618^***

(0.061)

0.076

(0.360)

0.008

(0.355)

0.074

(0.316)

省份固定

YES

YES

YES

YES

时间固定

YES

YES

YES

YES

观测值

434

434

434

403

R²

0.845

0.845

0.846

0.845