Research on the Nonlinear Impact of Environmental Regulation on the Efficiency of China’s Regional Green Economy: Insights from the PSTR Model

Table 3

Cross-sectional heterogeneity test and residual heterogeneity test of the panel smoothing threshold regression model.

Test type	Assumptions	Statistics value	m = 1	m = 2
Cross-sectional heterogeneity test		LM	9.034 (0.024)	11.652 (0.017)
	H0 : r = 0	LMF	2.983 (0.016)	2.184 (0.002)
	Hi : r ≥ 1	LRT	10.032 (0.003)	13.617 (0.003)
Residual heterogeneity test		LM	1.367 (0.673)	1.926 (0.238)
	H0 : r = 0	LMF	0.593 (0.348)	0.253 (0.524)
	Hi : r ≥ 2	LRT	1.573 (0.763)	1.766 (0.291)
		AIC	2.66	2.66
		BIC	2.97	2.93

Note. P-value in brackets.