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Table 1 The range, median and interquartile range of socio-demographic variables in 49 provinces of Spain used in our analyses [3033]

From: Spatial-temporal excess mortality patterns of the 1918–1919 influenza pandemic in Spain

Variable Range Interquartile range
  Minimum Maximum Median Lower bound Upper bound
Population size 97,956 1,176,044 368,024 277,698 510,315
Population density (/km 2 ) 14.7 189.1 40.8 25.7 64.1
Proportion of children, 5–15 y (%) 26.4 35.9 33.2 31.3 34.0
Infant mortality rates per 100,000 (<1 year) 156.3 772.3 472.2 342.9 618.2
Urbanization (%) 4.0 68.2 9.4 5.7 20.8