Malmö | Region outside Malmö | ||||||
---|---|---|---|---|---|---|---|
n | Asthma symptoms | OR a | n | Asthma symptoms | OR a | ||
Heavy traffic | No | 1767 | 209(11.8%) | 1.00 | 4178 | 449(10.7%) | 1.00 |
Yes | 1877 | 263(14.0%) | 1.17(0.96–1.43) | 1343 | 178(13.3%) | 1.23(1.02–1.49) | |
Heaviest road within <100 m | No heavy road | 586 | 74(12.6%) | 1.00 | 3124 | 342(10.9%) | 1.00 |
<2 cars/min | 1021 | 119(11.7%) | 0.93(0.68–1.26) | 1193 | 142(11.9%) | 1.09(0.88–1.34) | |
2–5 cars/min | 837 | 101(12.1%) | 0.97(0.70–1.33) | 961 | 112(11.7%) | 1.06(0.84–1.33) | |
6–10 cars/min | 663 | 97(14.6%) | 1.17(0.85–1.63) | 212 | 29(13.7%) | 1.24(0.82–1.87) | |
>10 cars/min | 537 | 81(15.1%) | 1.19(0.84–1.68) | 31 | 2 | - | |
NOx (μg/m3) | 0–8 | 13 | 1 | - | 1824 | 215(11.8%) | 1.00 |
8–11 | 46 | 6 | - | 1792 | 205(11.4%) | 0.96(0.79–1.18) | |
11–14 | 562 | 65(11.6%) | 1.00 | 1268 | 142(11.2%) | 0.93(0.74–1.16) | |
14–19 | 1325 | 146(11.0%) | 0.90(0.66–1.23) | 510 | 57(11.2%) | 0.95(0.69–1.29) | |
>19 | 1698 | 254(15.0%) | 1.28(0.95–1.72) | 127 | 8(6.3%) | 0.50(0.24–1.04) | |
p-trend | 0.002 | p-trend | 0.344 |