Ordinary OLS

Space-fixed OLS

Time-fixed OLS

Space and time-fixed OLS

LQ

0.0172***

(9.4300)

0.0177***

(9.9779)

0.0197***

(8.5239)

0.0208***

(9.0237)

LnER

−0.4151***

(−8.0424)

−0.4534***

(−8.9044)

−0.3324***

(−6.6451)

−0.3552***

(−7.2341)

(LnER)²

0.0237***

(8.4558)

0.0258***

(9.3358)

0.0193***

(6.9968)

0.0205***

(7.5985)

Trans

0.0099***

(3.6420)

0.0105***

(4.0135)

0.0063**

(2.1443)

0.0071**

(2.5366)

LnK

0.0165***

(2.7467)

0.0135**

(2.2908)

0.0179***

(2.8068)

0.0139**

(2.2592)

LnTech

0.0141***

(4.4565)

0.0157***

(5.0506)

0.0103***

(2.9792)

0.0125***

(3.6668)

LnAwage

−0.0844***

(−13.3426)

−0.0844***

(−13.9992)

−0.0751***

(−8.8895)

−0.0741***

(−9.1411)

C

1.9114***

(7.9771)

R²

0.7179

0.7346

0.5778

0.5928

σ²

0.0003

0.0003

0.0002

0.00002

LM test no spatial lag

186.1182

P = 0.000

179.5259

P = 0.000

115.7132

P = 0.000

105.1993

P = 0.000

robust LM test no spatial lag

7.7525

P = 0.005

7.8609

P = 0.005

2.4850

P = 0.115

2.4518

P = 0.117

LM test no spatial error

250.7538

P = 0.000

246.0372

P = 0.000

158.6566

P = 0.000

147.1975

P = 0.000

robust LM test no spatial error

72.3881

P = 0.000

74.3722

P = 0.000

45.4284

P = 0.000

44.4560

P = 0.000