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Table 2 Distribution of BC, daily average NO2, and FeNO

From: Exposure to traffic-related air pollution and changes in exhaled nitric oxide and DNA methylation in arginase and nitric oxide synthase in children with asthma

 

N

Mean

SD

IQR

25th

Median

75th

Min

Max

BC (μg/m3)

without MI

90

1.6

1.4

1.1

0.8

1.1

1.9

0.2

7.0

with MI

90

1.4

1.2

1.0

0.7

1.0

1.6

0.2

6.2

NO2(ppb)

without MI

74

40.6

25.1

27.9

23.3

36.7

51.2

3.4

138.3

with MI

90

41.7

23.2

26.2

25.3

39.3

51.5

3.4

138.3

FeNO (ppb)

 

89

30.6

28.3

42.0

9.0

17.0

51.0

2.5

106.0

  1. BC data were measured 24-h before buccal sample collection
  2. Abbreviations: BC black carbon, NO2 nitrogen dioxide, FeNO fractional exhaled nitric oxide, MI multiple imputation, IQR interquartile range
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Environmental Health

ISSN: 1476-069X