Table 6.

Fixed coefficient results

Variables	Model (4)	Model (5)	Model (6)
WY	1.903***	− 0.060***	†
	(0.634)	(0.015)
Digi	†	− 1.409***	†
		(0.456)
GDP	†	-	-
lnP	†	0.860***	†
		(0.326)
lnT	†	0.021*	†
		(0.011)
Ener	†	-	†
FDI	0.003	0.041	†
	(0.011)	(0.037)
Urban	1.094**	− 0.280**	†
	(0.468)	(0.123)
w_Digi	0.166	− 0.987	†
	(0.135)	(1.833)
w_GDP	0.600	-	-
	(0.673)
w_lnP	− 3.748	0.252	†
	(2.808)	(0.304)
w_lnT	0.346	0.055	0.368 (0.231)
	(0.310)	(0.076)
w_Ener	0.688	-	-0.765
	(0.688)		(0.508)
w_FDI	0.044	− 13.639***	†
	(0.074)	(3.663)
w_Urban	8.431*	− 1.465**	†
	(4.317)	(0.634)
R2	0.102	0.170	0.026

“†” indicates varying coefficient variables. “-” represents the missing value. *, **, and *** indicate statistically significant at the 0.1, 0.05, and 0.01 levels, respectively, with standard deviations in parentheses