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Table 1 Descriptive statistics of dissemination area variables (n = 3147) and their correlations with noise levels

From: Socioeconomic status and environmental noise exposure in Montreal, Canada

Variables (by dissemination area) Mean Median Standard deviation 1st percentile 99th percentile Pearson correlation with mean LAeq24h
Coefficient p value
Proportion of households with 1 person 34.7 35.3 14.8 4.3 68.2 0.259 <0.0001
Unemployment rate 8.8 7.7 6.3 0 28.6 0.232 <0.0001
Proportion of people over age 25 without a diploma 20.8 19.0 12.4 0 50.0 0.311 <0.0001
Proportion of people below the low income boundary 21.8 20.0 14.7 0 61.8 0.360 <0.0001
Median household income* 47 735 40 420 26 263 17 006 147 114 −0.426 <0.0001
Proportion of people who spend over 30% of their income on housing 21.2 20.5 14.3 0 57.4 0.378 <0.0001
Material deprivation index −0.003 −0.004 0.048 −0.116 0.112 0.380 <0.0001
Social deprivation index 0.014 0.020 0.043 −0.097 0.100 0.337 <0.0001
  1. *Distributions of income, after tax and earnings distributions have been suppressed where the total number of units (persons, families or households) in the reference year estimated number is less than 250.