变量

模型(1)

模型(2)

模型(3)

模型(4)

截距项

−0.5417

(−0.6630)

lnEC

1.4727^***

(14.6617)

0.9355^***

(5.4642)

1.4740^***

(14.9024)

1.0030^***

(6.1717)

lnPOP

−0.0375

(−0.4377)

−1.2262^**

(−2.5082)

−0.0614

(−0.7138)

−1.0631^**

(−2.1654)

lnPGDP

−1.6440^***

(−14.4768)

−0.2600^*

(−1.8911)

−1.8020^***

(−13.5418)

−0.1059

(−0.6491)

lnURB

1.9260^***

(9.5635)

−0.2386

(−0.986083)

2.3282^***

(11.2122)

−0.1252

(−0.5454)

lnER

0.4447^***

(8.4664)

0.1395^***

(4.2528)

0.4326^***

(8.7360)

0.1376^***

(4.2277)

lnRD

−0.0485

(−1.1656)

0.0196

(0.6411)

−0.1113^***

(−2.5572)

−0.0132

(−0.4373)

W*lnEC

−0.8685^***

(−4.5357)

0.1332

(0.4590)

−0.3690^*

(−1.8646)

0.2245

(0.6599)

W*lnPOP

0.4141^***

(3.1129)

−0.8290

(−0.9878)

0.4214^***

(3.1245)

−0.3950

(−0.4922)

W*lnPGDP

0.8578^***

(5.6493)

−0.1070

(−0.5284)

−0.0697

(−0.3741)

−0.0812

(−0.3765)

W*lnURB

−1.3577^***

(−3.827932)

−0.8353^**

(−1.9668)

0.2857

(0.6858)

−0.3060

(−0.6583)

W*lnER

0.2221^*

(1.8895)

0.2140^***

(3.2660)

0.2804^***

(2.4015)

0.1821^***

(2.5124)

W*lnRD

0.0192

(0.4653)

−0.0277

(−0.7935)

−0.0956^**

(−1.9153)

−0.1463^***

(−3.4536)

δ

0.3610^***

(6.5218)

0.6490^***

(17.4028)

−0.0610

(−1.0624)

0.2472^***

(4.1301)

Adjust R²

0.8323

0.9685

0.8783

0.9731

Log−L

−352.8462

−13.5584

−301.6327

49.8417

sigma^2

0.2590

0.0590

0.2197

0.0519

Wald_lag

47.6271^***

LR_lag

45.1958^***

Wald_err

19.1956^***

LR_err

19.2044^***