(1)

(2)

(3)

变量

lncon

lncon

lncon

cov1

0.29034^**

(2.725)

use1

0.12690^*

(1.807)

dig1

0.10266^**

(2.451)

Govex1

−0.00004

0.00036

0.00030

(−0.046)

(0.439)

(0.372)

agdp

0.12814^**

0.18974^***

0.20503^***

(2.920)

(5.079)

(6.286)

IS

2.40295^***

2.82842^***

2.74138^***

(3.531)

(3.719)

(3.581)

Constant

12.68877^***

12.42995^***

12.41804^***

(51.575)

(51.209)

(51.706)

样本量

176

176

176

R-squared

0.889

0.873

0.873