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Table 4 Geographical stratification. Current non-allergic asthma in the city of Malmö and the region outside.

From: Traffic exposure associated with allergic asthma and allergic rhinitis in adults. A cross-sectional study in southern Sweden

  

Current asthma, non-allergica

  

Malmö

Region outside Malmö

  

nb

n, %

Adj ORc

nb

n, %

Adj ORc

Heavy Traffic

No

1557

26(1.7%)

1.00

3700

60(1.6%)

1.00

 

Yes

1599

34(2.1%)

1.31(0.78–2.21)

1159

27(2.3%)

1.37(0.86–2.17)

Heaviest road radie <100 m (cars/min)

No heavy road

512

11(2.1%)

1.00

2766

51(1.8%)

1.00

 

<2 cars/min

902

17(1.9%)

0.88(0.41–1.89)

1045

14(1.3%)

0.73(0.40–1.33)

 

2–5 cars/min

726

11(1.5%)

0.73(0.31–1.70)

839

19(2.3%)

1.17(0.68–2.00)

 

6–10 cars/min

567

12(2.1%)

0.94(0.41–2.17)

181

3(1.7%)

0.82(0.25–2.66)

 

>10 cars/min

449

9(2.0%)

1.00(0.41–2.46)

28

0

-

NOx (ug/m3)

0–8

12

0

-

1595

27(1.7%)

1.00

 

8–11

39

0

-

1578

31(2.0%)

1.15(0.68–1.95)

 

11–14

501

15(3.0%)

1.00

1117

17(1.5%)

0.86(0.46–1.59)

 

14–19

1181

20(1.7%)

0.51(0.26–1.02)

455

12(2.6%)

1.50(0.75–3.00)

 

>19

1423

25(1.8%)

0.58(0.30–1.12)

114

0(0%)

-

   

p-trend

0.501

 

p-trend

0.677

  1. aAsthma triggered by other factors
  2. b Individuals with allergic current asthma were excluded from the analysis of non-allergic current asthma in relation to traffic.
  3. c OR:s, 95% CI, Adjusted for age, sex and smoking