变量

digitization门槛

usage_depth门槛

M1

M2

lnt_1

0.001^***

(5.37)

−0.00043^*

(−1.64)

lnt_2

0.0009^***

(10.04)

0.00017^**

(2.39)

lnt_3

−

0.00049^***

(0.37)

Controls

YES

YES

R²

0.495

0.546

F-test

0.000

0.000