变量

LLC检验

IPS检验

Fisher检验

结果

Innovation

−45.6306^***

−5.6213^***

923.8911^***

平稳

(0.0000)

(0.0000)

(0.0000)

Index

−38.1133^***

−5.4753^***

618.1627^***

平稳

(0.0000)

(0.0000)

(0.0000)

Coverage

−64.1942^***

−4.4830^***

609.6629^***

平稳

(0.0000)

(0.0000)

(0.0000)

Usage

−22.8821^***

−1.7828^**

496.7830^***

平稳

(0.0000)

(0.0373)

(0.0058)

Digiti

−93.5460^***

−11.7519^***

1273.7530^***

平稳

(0.0000)

(0.0000)

(0.0000)