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

Table 11 Regional heterogeneity regression results

Variable	The eastern region			The central and western regions
Variable	SDM Model (10) HD	SDM Model (11) LNM	SDM Model (12) HD	SDM Model (10) HD	SDM Model (11) LNM	SDM Model (12) HD
DIG	-8.3704 (8.2601)	-0.7951^a (0.2261)	-6.4789 (8.5785)	-0.7386^c (0.3868)	-0.0633^b (0.0223)	-0.5584^b (0.2678)
LNM			0.3566 (0.6437)			1.7412 (4.4573)
WDIG	-8.4300^b (3.1202)	-2.1853^a (0.6017)	-7.8818^b (3.1591)	-43.1761^b (13.7320)	-0.0420^c (0.0243)	-42.3074^b (13.7155)
WLNM			0.2050^b (0.0948)			0.3506^b (0.1508)
ρ	0.2569^a (0.0833)	0.3018^a (0.0792)	0.2250^a (0.0852)	0.7001^a (0.0425)	0.2647^a (0.0730)	0.7006^a (0.0428)
Control Variable	Control	Control	Control	Control	Control	Control
Fixed Effect	Double fixed effect	Double fixed effect	Double fixed effect	Double fixed effect	Double fixed effect	Double fixed effect
N	700	700	700	1253	1253	1253
R ²	0.0273	0.2262	0.0202	0.0799	0.2304	0.0881

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

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