Dependent Variable: TFP

(1)

(2)

(3)

(4)

Periphery areas of the Pearl River Delta

Eastern Guangdong

Western Guangdong

Northern Guangdong

DID

−4.9081***

−6.4944***

−2.1076*

1.9824***

(0.6898)

(0.8670)

(1.2188)

(0.4796)

Control variables

Yes

Yes

Yes

Yes

County fixed effect

Yes

Yes

Yes

Yes

Year fixed effect

Yes

Yes

Yes

Yes

Observations

R-squared

871

0.3614

1040

0.3127

910

0.2354

845

0.5110