The Impact of Digital Economy on Industrial Carbon Emission Efficiency: Evidence from Chinese Provincial Data

Table 4

Threshold estimators from sampling test results.

Threshold variable	The threshold number	Estimated value	F	10%	5%	1%
Digital	Single	10.753^∗∗∗	27.51	23.578	26.716	34.692
	Double	11.541^∗∗	25.50	20.061	25.365	35.601
	Triple	9.707	9.13	19.502	24.163	37.714