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Table 2 Current asthma in relation to traffic.

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

   Current asthma
   Allergica Non-allergicb
   nc n, % Adj ORd nc n, % Adj ORd
Heavy traffic No 5441 187(3.4%) 1.00 5341 87(1.6% 1.00
  Yes 2881 137(4.8%) 1.32(1.05–1.66) 2805 61(2.2%) 1.28(0.92–1.79)
Heaviest road radie <100 m no heavy road 3371 117(3.5%) 1.00 3316 62(1.9%) 1.00
  <2 cars/min 2014 79(3.9%) 1.13(0.84–1.51) 1966 31(1.6%) 0.82(0.53–1.28)
  2–5 cars/min 1608 54(3.4%) 0.96(0.69–1.33) 1584 30(1.9%) 0.98(0.63–1.53)
  6–10 cars/min 781 37(4.7%) 1.34(0.92–1.96) 759 15(2.0%) 0.95(0.54–1.69)
  >10 cars/min 511 35(6.8%) 1.83(1.23–2.72) 485 9(1.9%) 0.96(0.47–1.96)
NOx (ug/m3) 0–8 1665 68(4.1%) 1.00 1624 27(1.7%) 1.00
  8–11 1669 70(4.2%) 1.04(0.74–1.46) 1630 31(1.9%) 1.13(0.67–1.91)
  11–14 1661 52(3.1%) 0.74(0.51–1.07) 1641 32(2.0%) 1.15(0.69–1.94)
  14–19 1674 51(3.0%) 0.73(0.50–1.05) 1655 32(1.9%) 1.05(0.62–1.76)
  >19 1616 81(5.0%) 1.15(0.82–1.61) 1560 25(1.6%) 0.91(0.52–1.58)
    p-trend 0.669   p-trend 0.553
  1. a Asthma triggered by pollen or furred animals
  2. bAsthma triggered by other factors
  3. c Individuals with non-allergic current asthma were excluded from the analysis of allergic current asthma in relation to traffic, and vice versa.
  4. d OR:s, 95% CI. Adjusted for age, sex and smoking