变量

2014直接效应

2018直接效应

2014间接效应

2018间接效应

2014总效应

2018总效应

x₁

0.032247

(0.308592)

−0.000973

(−0.009285)

0.327474*

(1.748666)

−0.059204

(−0.209844)

0.359721*

(1.915775)

−0.060176

(−0.196982)

x₂

−0.145789**

(−2.255487)

−0.150376

(−1.541235)

−0.398072**

(−2.499276)

−0.151240

(−0.450331)

−0.543861***

(−3.274412)

−0.301616

(−0.793138)

x₃

0.271777***

(3.248151)

0.143156*

(1.671234)

0.257375*

(1.7539)

0.031518

（0.111967)

0.529152***

(3.947732)

0.174673

(0.556507)

x₄

−0.844503***

(−4.257395)

−0.725773***

(−4.113459)

0.11241

(0.293673)

1.052943*

(1.886854)

−0.732093*

(−1.798951)

0.325553

(0.5271)

x₅

0.117563

(0.683060)

0.154887

(0.936907)

−0.347329

(−0.95944)

0.4218

(0.648141)

−0.229766

(−0.568761)

0.576687

(0.767465)

x₆

0.200031*

(1.758712)

0.183893*

(1.731248)

−0.3405

(−1.638309)

−0.3933

(−1.452595)

−0.140512

(−0.698715)

−0.209408

(−0.715298)