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Table 2 Principle component analysis result of social vulnerability

From: Spatially explicit assessment of heat health risk by using multi-sensor remote sensing images and socioeconomic data in Yangtze River Delta, China

Components Eigenvalue Percentage variance explained Variables Loadings
(1) Socioeconomic status 2.667 48.24 Air conditioners per 100 household 0.818
Per capita GDP (RMB Yuan) 0.801
Illiteracy or semi-illiteracy rates of population (≥ 15 years) − 0.715
Percentage of the elderly (≥ 60 years) living alone − 0.649
Total beds of health institutions 0.641
(2) Age 1.018 17.12 Percentage of population over 65 years old − 0.769