Table 1 ADF test results for variables.

From: Threshold effect study on the development of prefabricated buildings for energy conservation and emission reduction in the construction industry

Variable

Inspection type

ADF Statistic

Threshold

Result

(C, T, L)

Jnjp

(0,0,10)

−4.213320

−4.020822***

Steady

Zpl

(0,0,10)

−4.598658

−4.025426**

Steady

Zcxl

(0,0,10)

−5.764977

−4.020822***

Steady

Jdcn

(0,0,10)

−7.155352

−4.025924***

Steady

Xjmj

(0,0,10)

−5.345742

−4.025426***

Steady

Zlsl

(0,0,10)

−6.721388

−4.025924***

Steady

Jdsl

(0,0,10)

−10.13874

−4.020822***

Steady

  1. ** and *** respectively indicate the crucial values at the 5% and 1% significance levels, meaning that the null hypothesis that a unit root exists is rejected at those levels.
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