. 2024 Dec 19;19(12):e0313870. doi: 10.1371/journal.pone.0313870

Table 5. Mechanistic testing.

variable	(1)	(2)	(3)	(4)	(5)	(6)
variable	EC	EC	CEI	GII	GII	CEI
dig	2.169^**	5.523^***	-0.345^***	0.027^***	0.075^**	-0.224^***
	[0.981]	[1.375]	[0.079]	[0.009]	[0.027]	[0.055]
dig²		-0.062^***			-0.001^***
		[0.011]			[0.000]
EC^*dig			0.000^***
			[0.000]
GII^*dig						0.011^***
						[0.003]
u-test		4.02^***			2.73^***
Sobel—p			0.000			0.000
Percentage of intermediary effects			23.0%			22.5%
Control variables	YES	YES	YES	YES	YES	YES
Year FE	YES	YES	YES	YES	YES	YES
Individual FE	YES	YES	YES	YES	YES	YES
City FE	YES	YES	YES	YES	YES	YES
Industry FE	YES	YES	YES	YES	YES	YES
N	26819	26819	26819	26819	26819	26819
R²	0.867	0.868	0.191	0.649	0.65	0.191

Note

***, ** and * indicate significance level of 1%, 5%and 10%, respectively.