[Retracted] The Impact of Agricultural Land Rights Policy on the Pure Technical Efficiency of Farmers’ Agricultural Production: Evidence from the Largest Wheat Planting Environment in China

Table 5

Instrumental variable test.

Variable	Two-stage regression results
	2SLS	IV-Tobit
Agricultural land confirmation	0.271 (0.029)	0.272 (0.027)
Control variable	Yes	Yes
Observation	2081	2081
R^2	0.179	—
	One-stage regression results
The average value of other villages in this town	0.503 (0.030)	0.503 (0.028)
Control variable	Yes	Yes
Observation	2081	2081
R^2	0.272	0.179
F statistics	321.564	20.450

Note. , , and represent significant statistical levels at 10%, 5%, and 1%, respectively; robust standard errors are in brackets.