Table 4.

Factor loadings for heat vulnerability variables for the four retained varimax-rotated factors based on data from 39,794 census tracts.

	Factor 1: social/environmental vulnerability	Factor 2: social isolation	Factor 3: prevalence of no AC	Factor 4: proportion of elderly/diabetes
Diabetes	0.37	−0.10	0.07	0.78
Below poverty line	0.87	0.18	−0.05	−0.03
Race other than white	0.85	−0.05	0.03	0.02
Live alone	−0.06	0.91	−0.002	0.16
Age ≥ 65 living alone	0.19	0.87	0.001	−0.06
Age ≥ 65 years	−0.32	0.38	−0.04	0.67
Less than high school diploma	0.85	−0.06	−0.05	0.07
Not green space	0.54	0.33	0.31	0.13
No central AC	0.02	0.02	0.92	0.06
No AC of any kind	−0.01	−0.03	0.92	−0.03

Absolute values > 0.4 are the most significant loadings on that factor.