Table 2 |
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|
Asthma diagnosis and asthma symptoms in relation to traffic. |
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|
Asthma Diagnosis |
Asthma Symptoms |
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|
|
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|
n |
n (%) |
OR a |
n |
n (%) |
OR a, |
||
|
Heavy traffic |
No |
6041 |
400(6.6%) |
1.00 |
6041 |
668(11.1%) |
1.00 |
|
Yes |
3275 |
286(8.7%) |
1.28(1.09–1.50) |
3275 |
447(13.6%) |
1.22(1.07–1.39) |
|
|
Heaviest road within <100 m |
no heavy road |
3755 |
269(7.2%) |
1.00 |
3755 |
419(11.2%) |
1.00 |
|
<2 cars/min |
2235 |
149(6.7%) |
0.92(0.75–1.13) |
2235 |
263(11.8%) |
1.05(0.89–1.24) |
|
|
2–5 cars/min |
1820 |
134(7.4%) |
1.00(0.81–1.25) |
1820 |
216(11.9%) |
1.06(0.89–1.26) |
|
|
6–10 cars/min |
886 |
69(7.8%) |
1.05(0.79–1.38) |
886 |
126(14.2%) |
1.25(1.01–1.55) |
|
|
>10 cars/min |
578 |
61(10.6%) |
1.40(1.04–1.89) |
578 |
85(14.7%) |
1.29(1.00–1.67) |
|
|
NOx (μg/m3) |
0–8 |
1855 |
140(7.5%) |
1.00 |
1855 |
217(11.7%) |
1.00 |
|
8–11 |
1855 |
146(7.9%) |
1.04(0.82–1.32) |
1855 |
213(11.5%) |
0.97(0.80–1.19) |
|
|
11–14 |
1855 |
124(6.7%) |
0.85(0.66–1.09) |
1855 |
208(11.2%) |
0.94(0.77–1.15) |
|
|
14–19 |
1858 |
115(6.2%) |
0.77(0.60–1.00) |
1858 |
206(11.1%) |
0.90(0.74–1.11) |
|
|
>19 |
1851 |
157(8.5%) |
1.05(0.83–1.34) |
1851 |
265(14.3%) |
1.21(0.99–1.46) |
|
|
p-trend |
0.84 |
p-trend |
0.026 |
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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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