Table 4 Association between modelled NO2 level and respiratory and allergic outcomes
Quintiles of modelled NO2 (μg/m3) | Number with outcome (%) | Adjusted OR* (95% CI) | p for trend |
|---|---|---|---|
Wheezing in last year | |||
<33.92 | 124 (23.9) | 1 | 0.18 |
33.92 – 34.23 | 134 (25.8) | 1.03 (0.76 – 1.39) | |
34.23 – 34.73 | 122 (23.5) | 0.86 (0.63 – 1.16) | |
34.73 – 36.79 | 122 (23.5) | 0.84 (0.63 – 1.14) | |
>36.79 | 122 (23.5) | 0.88 (0.66 – 1.19) | |
COPD | |||
<33.92 | 46 (8.9) | 1 | 0.95 |
33.92 – 34.23 | 50 (9.6) | 1.09 (0.68 – 1.73) | |
34.23 – 34.73 | 46 (8.9) | 0.95 (0.60 – 1.52) | |
34.73 – 36.79 | 45 (8.7) | 0.91 (0.57 – 1.45) | |
>36.79 | 51 (9.8) | 1.07 (0.68 – 1.68) | |
BHR to methacholine | |||
<33.92 | 59 (12.5) | 1 | 0.29 |
33.92 – 34.23 | 69 (14.4) | 1.08 (0.73 – 1.60) | |
34.23 – 34.73 | 64 (13.3) | 0.95 (0.64 – 1.41) | |
34.73 – 36.79 | 65 (13.8) | 1.03 (0.70 – 1.54) | |
>36.79 | 53 (11.1) | 0.81 (0.54 – 1.21) | |
Allergen skin sensitisation | |||
<33.92 | 162 (31.2) | 1 | 0.68 |
33.92 – 34.23 | 157 (30.2) | 0.98 (0.74 – 1.30) | |
34.23 – 34.73 | 160 (30.8) | 1.02 (0.77 – 1.35) | |
34.73 – 36.79 | 158 (30.4) | 0.97 (0.73 – 1.28) | |
>36.79 | 151 (29.1) | 0.94 (0.72 – 1.24) | |
High total IgE | |||
<33.92 | 114 (23.3) | 1 | 0.22 |
33.92 – 34.23 | 117 (23.4) | 0.98 (0.72 – 1.33) | |
34.23 – 34.73 | 105 (21.6) | 0.90 (0.66 – 1.23) | |
34.73 – 36.79 | 110 (22.4) | 0.90 (0.65 – 1.21) | |
>36.79 | 103 (20.7) | 0.84 (0.62 – 1.15) |