变量

(1)

GAP

(2)

GAP

(3)

GAP

(4)

GAP

(5)

GAP

DIF

−0.016***

(−25.48)

−0.002**

(−2.47)

覆盖广度

−0.002***

(−3.44)

使用深度

−0.001*

(−1.92)

数字化程度

−0.001

(−1.12)

UL

−0.176***

(−7.80)

−0.177***

(−7.95)

−0.176***

(−7.74)

−0.182***

(−8.03)

ISL

0.143***

(5.51)

0.138***

(5.34)

0.143***

(5.46)

0.146***

(5.58)

OPEN

−0.019***

(−3.23)

−0.017***

(−2.88)

−0.019***

(−3.18)

−0.020***

(−3.26)

PCGDP

−0.023***

(−4.97)

−0.021***

(−4.54)

0.025***

(−5.37)

−0.026***

(−5.58)

RHCL

0.001

(0.46)

0.000

(0.19)

0.001

(0.70)

0.001

(0.56)

GOV

0.003***

(2.92)

0.002***

(2.87)

0.003***

(2.95)

0.003***

(2.89)

Constant

0.173***

(53.18)

0.317***

(7.97)

0.305***

(7.70)

0.328***

(8.35)

0.337***

(8.59)

样本量

310

310

310

310

310

R-squared

0.700

0.915

0.917

0.914

0.914

F

649.1

419.3

428.8

415.3

411.3