变量

(1)

(2)

(3)

(4)

(5)

(6)

(7)

Y

Y

Y

Y

Y

Y

Y

DIFI

0.0362^***

0.0513^***

0.0390^***

0.0336^***

0.0230^***

0.0211^***

0.0142^***

(0.0045)

(0.0039)

(0.0035)

(0.0036)

(0.0034)

(0.0036)

(0.0037)

lnGDP

−0.0520^***

−0.0461^***

−0.0406^***

−0.0227^***

−0.0223^***

−0.0230^***

(0.0042)

(0.0036)

(0.0038)

(0.0039)

(0.0039)

(0.0038)

Foreign

−0.0360^***

−0.0406^***

−0.0163^***

−0.0152^***

−0.0109^***

(0.0033)

(0.0035)

(0.0041)

(0.0041)

(0.0041)

Is

0.0457^***

0.0512^***

0.0525^***

0.0550^***

(0.0117)

(0.0104)

(0.0104)

(0.0100)

Urban

−0.1850^***

−0.1748^***

−0.1461^***

(0.0209)

(0.0214)

(0.0216)

Edu

−0.4041^**

−0.2869

(0.1984)

(0.1932)

Innov

2.3629^***

(0.5066)

常数项

0.0922^***

0.5748^***

0.5366^***

0.3819^***

0.2963^***

0.2917^***

0.2750^***

(0.0021)

(0.0388)

(0.0329)

(0.0511)

(0.0464)

(0.0462)

(0.0447)

个体效应

YES

YES

YES

YES

YES

YES

YES

时间效应

YES

YES

YES

YES

YES

YES

YES

N

330

330

330

330

330

330

330

R²

0.855

0.906

0.933

0.936

0.950

0.951

0.954