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Table 1 Descriptive statistics for all variables12

From: “Happiness in the air?” the effects of air pollution on adolescent happiness

  Minimum Maximum Mean SD
PM2.5 20.83 35.81 28.11 4.78
PM10 34.60 72.26 51.47 9.57
NO2 20.43 34.01 28.51 4.47
% of college graduates 2.05 35.54 11.21 8.28
Population density 51 39,947 9310.9 10,543.03
Mutuality 1 2.25 1.70 .200
Wave 1 Happiness 1 4 2.97 .806
Wave 2 Happiness 1 4 2.92 .798
Wave 3 Happiness 1 4 2.83 .763
Sex 0 1 .51 .50
Family income 0 600 54.66 43.60
Family intactness 0 1 .12 .33
Wave 1 Class rank 1 5 2.95 1.18
Wave 1 Negative life event 0 16 2.48 2.10
Wave 1 Family cohesion 1 4 1.99 .64
Wave 1 Self-esteem 6 24 16.02 2.89
Wave 1 Negative emotion 0 4 .57 .80
Wave 1 deviance 0 10 .49 1.01
Wave 1 Friends’ support 1 4 1.76 .54
  1. 1 n = 40 at the district level
  2. 2 n varied from 2548 to 2571 at the individual level