变量

普通回归模型

空间计量模型

OLS

SAR

SEM

SDM

lnCovid

−0.093

−0.132^**

−0.086^*

−0.101^*

(−1.48)

(−2.11)

(−1.67)

(−1.70)

lnCarMarket

0.652^**

0.664^***

0.663^***

0.844^***

(2.67)

(3.39)

(3.20)

(4.53)

lnCarProduction

0.107^*

0.108^**

0.113^**

0.069

(1.84)

(2.31)

(2.34)

(1.58)

lnPerGDP

0.237

0.281

0.164

0.045

(0.99)

(1.43)

(0.80)

(0.25)

lnPopulation

0.304

0.328^*

0.255

0.111

(1.27)

(1.69)

(1.26)

(0.64)

_cons

−2.496

−2.692

−1.766

−0.247

(−1.05)

(−1.40)

(−0.88)

(−0.14)

W:

lnCarSales

−0.037

−0.099^**

(−1.05)

(−2.24)

e.lnCarSales

−0.632

−1.225^*

(−1.16)

(−1.71)

lnCarProduction

0.059^**

(2.37)

N

19

19

19

19

R²

0.982

0.988

0.987

0.988

WaldTest

1.10

1.35

8.74^*