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Table 1 Summary of predicted annual pollutant levels at assessment centre locations

From: Long-term ambient air pollution exposure and cardio-respiratory disease in China: findings from a prospective cohort study

 

2013

2014

2015

 

Pollutant (μg/m3)

Mean

SD

P5

P95

IQR

Mean

SD

P5

P95

IQR

Mean

SD

P5

P95

IQR

% change of mean from 2013 to 2015

NO2

68.4

39.5

30.9

117.3

36.5

68.2

36.7

32.3

117.5

33.7

69.4

36.1

33.8

119.4

33.8

 + 1.4

SO2

38.6

18.9

11.7

68.4

20.9

29.4

15.5

8.4

52.5

15.5

23.2

12.3

6.3

40.3

13.7

-39.9

PM10

91.9

25.8

60.2

151.0

23.3

85.2

24.4

58.2

137.7

26.9

77.6

21.9

50.0

127.5

18.9

-15.5

PM2.5

83.6

25.8

56.5

140.5

24.1

76.3

23.4

51.3

128.5

22.4

65.3

19.9

44.9

110.2

19.0

-21.9

O3

100.9

37.8

37.5

161.8

44.3

95.1

35.6

35.5

145.6

48.3

96.8

36.0

35.9

149.0

49.4

-4.1

CO (mg/m3)

0.59

0.22

0.24

0.89

0.34

0.62

0.23

0.26

0.95

0.32

0.64

0.24

0.26

0.96

0.36

 + 8.0

  1. Summary statistics calculated across annual predicted pollutant levels at all assessment centre locations
  2. SD Standard deviation, P5 5th Percentile. P95 95th Percentile, IQR Inter-quartile range
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Environmental Health

ISSN: 1476-069X