(1)

(2)

(3)

(4)

(5)

非国有

国有

DT

0.052

0.052

0.165***

0.166***

0.184***

(0.5963)

(0.5963)

(10.7212)

(10.4032)

(6.9038)

_cons

−6.950**

−1.670

−7.046***

−6.183***

−7.560***

(−2.4123)

(−1.1629)

(−6.9537)

(−4.7114)

(−6.8319)

Controls

Yes

Yes

Yes

Yes

Yes

Year

Yes

Yes

Yes

Yes

Yes

Industry

Yes

Yes

Yes

Yes

Yes

N

86

760

5419

3892

2380

r2_a

0.086

0.077

0.176

0.140

0.231