Impacts of highway traffic exhaust in alpine valleys on the respiratory health in adults: a cross-sectional study

Table 2 Adjusted OR and 95%CI of reported respiratory symptoms for "living within 200 m of a highway*.

Symptoms	Total group n = 1566-1568	Participants with or without hay fever or allergic rhinitis n = 1561-1563
		with hay fever or allergic rhinitis	without hay fever or allergic rhinitis	p-value for interaction
Wheezing with breathing problems	2.64 (1.07-6.48)	2.91 (0.76-11.2)	2.42 (0.86-6.81)	0.80
Wheezing without colds	3.10 (1.27-7.55)	4.64 (1.22-17.7)	2.63 (0.98-7.04)	0.43
Regular cough	1.36 (0.72-2.56)	1.89 (0.72-5.01)	1.27 (0.64-2.52)	0.43
Regular phlegm	1.19 (0.60-2.38)	1.41 (0.49-4.06)	1.09 (0.52-2.31)	0.65
Chronic cough	2.88 (1.17-7.05)	7.14 (2.06-24.7)	2.01 (0.7-5.46)	0.048
Chronic cough or phlegm	2.40 (1.01-5.70)	4.73 (1.43-15.7)	1.78 (0.6-4.69)	0.12

*as traffic exposure proxy.
The adjustments include sex, age, smoking status (current, former, never), pack years of cigarettes smoked, body mass index, community of residence and the binary variables exposure to environmental tobacco smoke (ETS), ETS-exposure at work, current occupational exposure to vapors, gas, dust, fumes, or aerosols, primary school education only, doctor diagnosed asthma, maternal atopy, and severe respiratory infection in early childhood.

ISSN: 1476-069X