Table 4 |
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|
Geographical stratification. Asthma symptoms in the city of Malmö and the region outside. |
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|
Malmö |
Region outside Malmö |
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|
|
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|
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 |
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|
|
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|
a Adjusted for age, sex, and smoking. [OR (95%CI)]. |
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|
Lindgren et al. International Journal of Health Geographics 2009 8:2 doi:10.1186/1476-072X-8-2 |
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