Impact of digital economic development and environmental pollution on residents’ health: an empirical analysis based on 279 prefecture-level cities in China

Table 3 Test results of mediating effect model

Variable	Model (7)	Model (8)	Model (9)
Variable	HD	LNM	HD
DIG	-8.7950^a (2.6462)	-2.7632^a (0.3090)	-9.6521^a (2.8329)
LNM			0.3102^c (0.1693)
LNEDU	0.0121 (0.0530)	0.0004 (0.0031)	0.0123 (0.0529)
LNDEN	-0.2649^b (0.0987)	0.0202^a(0.0053)	-0.2587^b (0.0996)
LNFIS	0.6612^b (0.2224)	-0.0581^b(0.0274)	-0.6792^b (0.2297)
HP	0.0618 (0.0674)	0.0174^a (0.0042)	0.0672 (0.0672)
_Cons	20.0001^a (2.3861)	3.4600^a (0.2411)	21.0739^a (2.6844)
Fixed Effect	Double fixed effect	Double fixed effect	Double fixed effect
N	1 953	1 953	1 953
R ²	0.3430	0.7219	0.3440

^a, ^b, and ^c, respectively, indicates significance at the 1, 5, and 10% level. Robustness standard error in Parentheses

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