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Table 3 Association between residential proximity to a main road and respiratory and allergic outcomes

From: Effect of traffic pollution on respiratory and allergic disease in adults: cross-sectional and longitudinal analyses

Outcomes

Number with outcome (%)

Adjusted OR*(95% CI)

p-value

Wheezing in last year

   

≤150 m

129 (22.2)

0.86 (0.68 – 1.08)

0.19

>150 m

495 (24.5)

1

 

Bands of distance

   

   <50 m

46 (28.1)

1.60 (0.96 – 2.68)

0.07

   50 – 100 m

45 (19.9)

1.00 (0.61 – 1.66)

 

   100 – 150 m

38 (20.0)

1

 

COPD

   

≤150 m

53 (9.2)

0.97 (0.68 – 1.37)

0.86

>150 m

185 (9.2)

1

 

Bands of distance

   

   <50 m

16 (9.8)

1.54 (0.69 – 3.45)

0.29

   50 – 100 m

24 (10.7)

1.67 (0.79 – 3.49)

 

   100 – 150 m

13 (6.8)

1

 

BHR

   

≤150 m

64 (11.9)

0.92 (0.68 – 1.24)

0.57

>150 m

246 (13.3)

1

 

Bands of distance

   

   <50 m

13 (8.5)

0.54 (0.27 – 1.11)

0.09

   50 – 100 m

25 (12.0)

0.80 (0.44 – 1.45)

 

   100 – 150 m

26 (14.7)

1

 

Allergic sensitisation

   

≤150 m

163 (28.1)

0.87 (0.70 – 1.07)

0.19

>150 m

625 (31.0)

1

 

Bands of distance

   

   <50 m

51 (31.1)

1.72 (1.05 – 2.81)

0.03

   50 – 100 m

70 (31.0)

1.53 (0.97 – 2.42)

 

   100 – 150 m

42 (22.1)

1

 

High total IgE

   

≤150 m

109 (19.7)

0.80 (0.63 – 1.02)

0.07

>150 m

440 (23.0)

1

 

Bands of distance

   

   <50 m

31 (20.3)

1.21 (0.69 – 2.12)

0.51

   50 – 100 m

43 (19.6)

1.01 (0.61 – 1.69)

 

   100 – 150 m

35 (19.3)

1

 
  1. OR odds ratio; CI confidence interval; COPD chronic obstructive pulmonary disease; BHR bronchial hyper-responsiveness; IgE immunoglobulin E.
  2. * OR adjusted for sex, age group, Carstairs deprivation scores and smoking status
  3. † p-value for trend across bands of distance