当期影响

滞后影响

①

②

③

④

Internet

−0.0514^***

−0.0343^***

(−13.84)

(−6.24)

L.Internet

−0.0437^***

−0.0216^***

(−10.27)

(−3.35)

GDPper

−0.0029^***

−0.0035^***

(−3.76)

(−3.78)

Trade

−0.0537^***

−0.0639^***

(−3.74)

(−3.44)

Gov

−0.1265^***

−0.1316^***

(−5.78)

(−5.65)

Fin

0.0117^***

0.0128^***

(3.38)

(3.27)

Roadper

−0.0013^***

−0.0012^***

(−4.58)

(−3.85)

常数项

0.1056^***

0.1622^***

0.0980^***

0.1566^***

(48.84)

(17.91)

(41.63)

(14.63)

个体固定

是

是

是

是

N

248

248

217

217

R2

0.4700

0.6014

0.3633

0.5194