解释变量

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固定效应(t)

随机效应(z)

固定效应(t)

随机效应(z)

c

48.340^***

(4.63)

33.472^***

(3.11)

75.430^***

(5.21)

55.139^***

(4.04)

revd

0.778^***

(8.53)

0.832^***

(8.7)

-

-

expd

-

-

−0.517^***

(−4.34)

−0.561^***

(−4.84)

rgdp

0.263^***

(4.73)

0.290^***

(4.80)

0.145^***

(6.25)

0.176^***

(6.77)

rrev

-

-

0.034^*

(1.75)

0.044^*

(1.88)

rexp

−0.103^***

(−4.90)

−0.102^***

(−4.41)

-

-

is

−0.609^***

(−4.76)

−0.454^***

(−3.46)

−0.254^***

(−3.94)

−0.206^***

(−3.12)

hausman检验

0.0000

0.0000