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Table 3 Nitrogen dioxide (NO 2 ) exposure levels predicted in 1995/96 and 2007 according to population characteristics

From: Nitrogen dioxide levels estimated from land use regression models several years apart and association with mortality in a large cohort study

   NO2
Variable N mean sd Q25 Q50 Q75 min max
1995/96
All 684,204 45.7 5.9 42.6 46.6 49.8 18.8 59.3
Gender
Men 306,018 45.4 6.0 42.2 46.4 49.7 18.8 59.3
Women 378,186 45.8 5.9 42.8 46.8 49.9 18.8 59.3
Age (years)
45-64 418,241 45.3 6.1 42.0 46.2 49.6 18.8 59.3
65-74 186,614 46.0 5.8 43.2 47.0 50.0 18.8 59.3
75-80 79,349 46.8 5.4 44.2 47.7 50.4 18.8 59.1
Socioeconomic position (SEP)
High 138,457 47.2 4.2 44.5 47.6 50.1 24.3 58.0
medium-high 142,446 47.1 5.2 44.5 47.9 50.8 22.0 59.1
Medium 139,072 46.5 5.7 43.3 47.4 50.4 20.1 59.3
medium-low 137,017 44.3 6.7 39.9 45.6 49.1 18.8 58.8
Low 127,212 42.9 6.4 39.3 43.8 47.6 18.8 58.8
2007
All 684,013 43.9 8.3 39.0 44.8 49.4 13.0 75.2
Gender
Men 306,018 43.6 8.4 38.6 44.5 49.1 13.0 73.1
Women 378,186 44.1 8.3 39.4 45.0 49.6 13.0 75.2
Age (years)
45-64 418,241 43.4 8.4 38.2 44.2 49.0 13.0 75.2
65-74 186,614 44.4 8.2 39.9 45.3 49.7 13.0 73.1
75-80 79,349 45.5 7.9 41.7 46.1 50.5 13.1 69.4
Socioeconomic position (SEP)
High 138,457 46.0 6.3 42.2 46.0 49.6 19.8 68.6
medium-high 142,446 45.8 7.8 41.9 46.2 50.9 18.2 75.2
Medium 139,072 44.9 8.5 40.1 45.7 50.8 14.6 73.1
medium-low 137,017 42.1 9.2 34.9 43.0 48.0 13.0 67.5
Low 127,212 40.4 8.2 35.3 41.2 46.3 13.0 65.1