| Chronic bronchitis or emphysema (n = 397) | Asthma (n = 472) | Rhinitis (n = 1227) | ||||
| % | OR (95% CI) | % | OR (95% CI) | % | OR (95% CI) | |
| Self-reported traffic | ||||||
| Absent | 4.2 | 1.00 | 4.3 | 1.00 | 11.1 | 1.00 |
| Low | 3.7 | 0.88 (0.64 to 1.20) | 4.7 | 1.11 (0.83 to 1.48) | 12.8 | 1.14 (0.95 to 1.38) |
| Intermediate | 4.3 | 1.04 (0.77 to 1.40) | 5.0 | 1.18 (0.88 to 1.58) | 13.3 | 1.18 (0.98 to 1.42) |
| High | 4.9 | 1.19 (0.84 to 1.69) | 6.3 | 1.46 (1.05 to 2.03) | 14.9 | 1.30 (1.05 to 1.62) |
| p trend | 0.211 | 0.025 | 0.019 | |||
| Distance from high traffic roads | ||||||
| >200 m | 4.4 | 1.00 | 4.9 | 1.00 | 12.3 | 1.00 |
| 100–200 m | 4.0 | 0.89 (0.66 to 1.20) | 4.9 | 1.00 (0.77 to 1.29) | 12.8 | 1.01 (0.85 to 1.19) |
| 50–100 m | 3.1 | 0.69 (0.45 to 1.05) | 5.3 | 1.07 (0.76 to 1.52) | 15.4 | 1.26 (1.03 to 1.54) |
| <50 m | 4.1 | 0.94 (0.67 to 1.31) | 4.9 | 1.01 (0.73 to 1.39) | 14.6 | 1.18 (0.96 to 1.44) |
| p trend | 0.278 | 0.851 | 0.030 | |||
| Metres of HTR within 200 m from home | ||||||
| None | 4.4 | 1.00 | 4.9 | 1.00 | 12.3 | 1.00 |
| Low (<416 m) | 3.9 | 0.90 (0.63 to 1.26) | 5.4 | 1.09 (0.81 to 1.46) | 13.9 | 1.09 (0.90 to 1.32) |
| Medium (416–798 m) | 3.5 | 0.75 (0.52 to 1.07) | 5.7 | 1.16 (0.87 to 1.54) | 14.3 | 1.16 (0.97 to 1.39) |
| High (>798 m) | 4.1 | 0.94 (0.69 to 1.29) | 4.0 | 0.80 (0.58 to 1.11) | 13.6 | 1.09 (0.90 to 1.32) |
| p trend | 0.285 | 0.572 | 0.152 | |||
| Quartiles of PM emissions | ||||||
| 1st | 4.2 | 1.00 | 4.9 | 1.00 | 10.6 | 1.00 |
| 2nd | 4.1 | 0.96 (0.71 to 1.30) | 5.4 | 1.10 (0.84 to 1.44) | 14.7 | 1.41 (1.17 to 1.69) |
| 3rd | 4.1 | 0.90 (0.66 to 1.23) | 4.7 | 0.94 (0.71 to 1.24) | 12.1 | 1.11 (0.92 to 1.34) |
| 4th | 4.5 | 1.05 (0.77 to 1.42) | 5.2 | 1.06 (0.80 to 1.39) | 14.7 | 1.37 (1.14 to 1.64) |
| p trend | 0.871 | 0.980 | 0.018 | |||
| Estimated NO2 (quartiles, μg/m3) | ||||||
| 1st (21.0–37.3) | 4.2 | 1.00 | 4.6 | 1.00 | 10.8 | 1.00 |
| 2nd (37.3–47.3) | 4.6 | 1.03 (0.77 to 1.39) | 5.0 | 1.11 (0.84 to 1.47) | 13.3 | 1.27 (1.06 to 1.53) |
| 3rd (47.3–50.3) | 3.9 | 0.90 (0.65 to 1.23) | 5.1 | 1.08 (0.81 to 1.44) | 13.2 | 1.15 (0.96 to 1.39) |
| 4th (50.3–62.6) | 4.2 | 0.97 (0.71 to 1.31) | 5.2 | 1.11 (0.84 to 1.48) | 14.7 | 1.30 (1.08 to 1.56) |
| p trend | 0.624 | 0.624 | 0.532 | 0.020 | ||
OR, odds ratio adjusted for age, sex, smoking habit and educational level.