Table 4.
Adjusted hazard ratios (HR) of the association between nitrogen dioxide (NO2) estimated from the 1995/96 and the 2007 LUR models and natural mortality. Rome 2001-2006
|
1995/96 LUR model |
2007 LUR model |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Population | HR | 95%CI | Population | HR | 95%CI | |||||
| Quintiles of NO2 | ||||||||||
| 1 |
136,842 |
1.00 |
|
|
|
136,841 |
1.00 |
|
|
|
| 2 |
136,840 |
1.04 |
1.01 |
- |
1.07 |
136,842 |
1.06 |
1.03 |
- |
1.09 |
| 3 |
136,885 |
1.08 |
1.05 |
- |
1.11 |
136,846 |
1.08 |
1.04 |
- |
1.11 |
| 4 |
136,829 |
1.08 |
1.04 |
- |
1.11 |
136,843 |
1.09 |
1.06 |
- |
1.13 |
| 5 |
136,808 |
1.10 |
1.06 |
- |
1.13 |
136,832 |
1.11 |
1.07 |
- |
1.14 |
| p-trend§ |
|
<0.001 |
|
|
|
|
<0.001 |
|
|
|
| Categories of NO2 | ||||||||||
| <=35 μg/m3 |
44,357 |
1.00 |
|
|
|
103,836 |
1.00 |
|
|
|
| 35-45 μg/m3 |
217,880 |
1.05 |
1.01 |
- |
1.10 |
246,148 |
1.07 |
1.04 |
- |
1.10 |
| 45-50 μg/m3 |
259,318 |
1.10 |
1.05 |
- |
1.14 |
181,160 |
1.10 |
1.07 |
- |
1.14 |
| >50 μg/m3 |
162,649 |
1.13 |
1.08 |
- |
1.18 |
153,060 |
1.12 |
1.08 |
- |
1.16 |
| p-trend§ |
|
<0.001 |
|
|
|
|
<0.001 |
|
|
|
| Effect per linear increase in NO2 | ||||||||||
| per 10 μg/m3 |
|
1.06 |
1.04 |
- |
1.08 |
|
1.04 |
1.03 |
- |
1.05 |
| per IQ range* | 1.04 | 1.03 | - | 1.06 | 1.04 | 1.03 | - | 1.06 | ||
HR, Hazard Ratios, adjusted for age, sex, marital status, place of birth, education, occupation, and area-based socioeconomic position.
* The IQ ranges are 7.28 μg/m3 and 10.37 μg/m3, in 1995/96 and in 2007, respectively.
§ Wald test.