(1)

(2)

(3)

(4)

DID

0.331^***

0.427^***

0.681^***

0.799^***

(0.06)

(0.061)

(0.069)

(0.071)

CGDP

0.402^***

1.398^***

0.431^***

1.411^***

(0.034)

(0.032)

(0.04)

(0.028)

GOV

0.021^***

1.204^***

0.012^***

0.022^***

(0.205)

(0.194)

(0.244)

(0.178)

OFF

30.214^***

12.342^*

65.234^***

33.629^***

(5.231)

(5.332)

(5.221)

(5.432)

RC

2.143^***

1.977^***

1.879^***

1.736^***

(1.003)

(0.961)

(0.932)

(0.903)

STR

2.109^***

−0.186

2.062^***

−0.193

(0.301)

(0.231)

(0.285)

(0.298)

Constant

−1.521^***

−8.957^***

−5.672^***

−10.899^***

(0.298)

(0.342)

(0.401)

(0.472)

时间固定效应

YES

YES

NO

NO

地区固定效应

YES

NO

YES

NO

观测值

697

697

697

697

R²

0.732

0.729

0.711

0.699