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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