Table 7 |
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|
Geographical stratification. Chronic bronchitis symptoms in the city of Malmö and the area outside. |
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|
Malmö |
Region outside Malmö |
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|
|
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|
n |
Chronic b. symptoms |
OR a |
n |
Chronic b. symptoms |
OR a |
||
|
Heavy traffic |
No |
1767 |
150(8.5%) |
1.00 |
4178 |
246(5.9%) |
1.00 |
|
Yes |
1877 |
140(7.5%) |
0.91(0.71–1.16) |
1343 |
92(6.9%) |
1.20(0.94–1.54) |
|
|
Heaviest road within <100 m |
no heavy road |
586 |
43(7.3%) |
1.00 |
3124 |
179(5.7%) |
1.00 |
|
<2 cars/min |
1021 |
89(8.7%) |
1.21(0.83–1.77) |
1193 |
68(5.7%) |
1.00(0.75–1.34) |
|
|
2–5 cars/min |
837 |
66(7.9%) |
1.10(0.73–1.64) |
961 |
69(7.2%) |
1.30(0.98–1.74) |
|
|
6–10 cars/min |
663 |
47(7.1%) |
0.94(0.61–1.45) |
212 |
19(9.0%) |
1.63(0.99–2.69) |
|
|
>10 cars/min |
537 |
45(8.4%) |
1.22(0.78–1.89) |
31 |
3 |
- |
|
|
NOx (μg/m3) |
0–8 |
13 |
0 |
- |
1824 |
109(6.0%) |
1.00 |
|
8–11 |
46 |
4 |
- |
1792 |
113(6.3%) |
1.04(0.79–1.37) |
|
|
11–14 |
562 |
35(6.2%) |
1.00 |
1268 |
84(6.6%) |
1.17(0.87–1.57) |
|
|
14–19 |
1325 |
96(7.2%) |
1.13(0.76–1.70) |
510 |
26(5.1%) |
0.88(0.57–1.37) |
|
|
>19 |
1698 |
155(9.1%) |
1.57(1.06–2.30) |
127 |
6(4.7%) |
0.86(0.37–2.01) |
|
|
p-trend |
0.017 |
p-trend |
0.541 |
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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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