Amplified effect of social vulnerability on health inequality regarding COVID-19 mortality in the USA: the mediating role of vaccination allocation

Table 3 Quantification of mediation effects (based on the data of 30^th June 2021)

	By social vulnerability index domain			Overall
	Socioeconomic status	Household composition & disability	Minority status & language
Path a: (X > M)	-0.0851	-0.0199	-0.0278	-
Path b: (M > Y)	-0.0163	-0.0163	-0.0163	-
Indirect effect (a × b: X > M > Y)	0.0014	0.0003	0.0005	0.0022
Direct effect (Path c’: X > Y adjusted for M)	0.0023	0.0027	-	0.0050
Total effect (Path c: X > Y)	0.0037	0.0030	0.0005	0.0072
Mediated (a × b/c), %	37.8	10.0	100.0	30.6

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