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Table 10 Relation between the exposure proxies and modeled NOx (μg/m3) as a continuous variable.

From: Traffic-related air pollution associated with prevalence of asthma and COPD/chronic bronchitis. A cross-sectional study in Southern Sweden

  

Malmö NOx

Region outside Malmö NOx

  

n

Mean

SD

Median

n

Mean

SD

Median

Heavy traffic

No

1507

18.0

3.1

17.4

4502

10.2

3.5

9.6

 

Yes

1772

19.6

3.2

19.6

1495

12.1

4.5

11.4

Heaviest road within <100 m

no heavy road

488

17.6

3.4

17.2

3267

10.1

3.4

9.6

 

<2 cars/min

855

18.0

2.9

17.8

1380

9.8

4.3

8.1

 

2–5 cars/min

746

18.9

3.3

19.4

1074

12.6

3.8

11.5

 

6–10 cars/min

627

18.1

2.8

17.4

259

13.8

2.3

14.03

 

>10 cars/min

561

21.9

2.0

22.0

17

19.2

4.4

21.6

NOx (μg/m3)

0–8

13

6.8

1.3

6.8

1824

6.7

1.1

6.8

 

8–11

46

10.4

0.8

9.6

1792

9.9

0.8

10.0

 

11–14

562

13.5

0.7

13.7

1268

12.8

1.0

12.7

 

14–19

1325

16.7

1.3

15.9

510

15.7

1.2

15.3

 

>19

1698

21.7

1.3

21.5

127

21.9

3.8

21.2

 

Total

3644

18.4

3.6

18.5

5521

10.31

3.6

10.04