Table 1.

Association of Social Vulnerability Index ^a indicators of SARS-CoV-2 molecular polymerase chain reaction testing (per 100 000 population) using geographically weighted Poisson regression, Massachusetts, February–June 2020

Indicator	Relative risk
	Median (interquartile range)	Range
Unemployed population aged ≥16 years	1.05 (0.99-1.12)	0.84-1.21
Population aged ≥65 years	0.97 (0.87-0.98)	0.83-1.00
Population living below the federal poverty threshold	1.05 (0.87-1.07)	0.84-1.08
Estimate of the civilian noninstitutionalized population living with a disability	1.07 (1.05-1.09)	1.01-1.18
Racial/ethnic minority population (ie, all people except non-Hispanic White)	1.02 (1.01-1.04)	1.00-1.08
People aged ≥5 years with limited English proficiency (ie, who speak English “not well” or “not at all”)	0.96 (0.95-0.99)	0.88-1.44
Uninsured people in the civilian noninstitutionalized population	0.96 (0.95-1.04)	0.88-1.16
Multiunit housing (ie, housing structures with ≥10 units)	1.05 (1.03-1.10)	1.02-1.36
People living in group quarters	1.01 (1.01-1.03)	0.99-1.22
Households without vehicle access	1.04 (1.03-1.16)	0.86-1.24
Crowded housing (ie, households with more people than rooms)	0.89 (0.80-0.94)	0.58-0.99

^aDeveloped by the Centers for Disease Control and Prevention/Agency for Toxic Substances and Disease Registry, the Social Vulnerability Index is a database and composite index that models social vulnerability in communities in the United States using 15 census-based indicators that capture data in domains of social vulnerability. ¹⁷