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Table 1 Spearman’s correlation values for vulnerability variables (n = 76)

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

  Percentage of the elderly (≥ 60 years) living alone Percentage of population over 65 years old Illiteracy or semi-illiteracy rates of population (≥ 15 years) Per capita GDP (RMB Yuan) Total beds of health institutions Air conditioners per 100 household
Percentage of the elderly (≥ 60 years) living alone 1.00      
Percentage of population over 65 years old 0.07 1.00     
Illiteracy or semi-illiteracy rates of population (≥ 15 years) 0.49 0.20 1.00    
Per capita GDP (RMB Yuan) − 0.39 − 0.48 − 0.40 1.00   
Total beds of health institutions − 0.26 − 0.19 − 0.37 0.38 1.00  
Air conditioners per 100 household − 0.44 − 0.28 − 0.47 0.61 0.46 1.00
  1. All values are statistically significant at p < 0.001 except for those in italics