Crude and adjusted HR following a 10 μg/m3 increase in NO2 levels and 95% CI for all-cause and cause-specific mortality
| Mortality (n) | Crude HR | (95% CI) | HR* | (95% CI) | HR† | (95% CI) | |
| All-cause mortality | 1232 | 0.98 | 0.94 to 1.03 | 0.98 | 0.94 to 1.03 | 1.02 | 0.96 to 1.08 |
| Cause-specific mortality | |||||||
| Cardiopulmonary (I10–70/J00–J99) | 593 | 1.08 | 1.01 to 1.16 | 1.08 | 1.01 to 1.16 | 1.16 | 1.06 to 1.26 |
| Circulatory disease (I10–70) | 394 | 1.06 | 0.97 to 1.15 | 1.06 | 0.97 to 1.15 | 1.15 | 1.03 to 1.28 |
| Ischaemic heart disease (I20–I25) | 91 | 1.16 | 0.97 to 1.39 | 1.16 | 0.97 to 1.39 | 1.27 | 1.02 to 1.58 |
| Other cardiac disease (I26–51) | 106 | 1.17 | 0.99 to 1.38 | 1.17 | 0.99 to 1.39 | 1.19 | 0.97 to 1.47 |
| Cerebrovascular disease (I60–69) | 191 | 0.97 | 0.87 to 1.09 | 0.97 | 0.86 to 1.09 | 1.09 | 0.94 to 1.27 |
| Other circulatory disease | 6 | 0.77 | 0.43 to 1.37 | 0.77 | 0.43 to 1.37 | 0.66 | 0.36 to 1.23 |
| Pulmonary disease (J00–J99) | 199 | 1.14 | 1.01 to 1.28 | 1.14 | 1.01 to 1.28 | 1.19 | 1.02 to 1.38 |
| Pneumonia and influenza (J10–29) | 108 | 1.24 | 1.05 to 1.46 | 1.24 | 1.05 to 1.47 | 1.18 | 0.96 to 1.45 |
| COPD and allied conditions (J40–47) | 35 | 0.85 | 0.66 to 1.10 | 0.85 | 0.66 to 1.09 | 1.11 | 0.78 to 1.56 |
| Other pulmonary disease | 56 | 1.18 | 0.94 to 1.49 | 1.19 | 0.94 to 1.49 | 1.28 | 0.94 to 1.74 |
| Lung cancer (C33–C34) | 86 | 0.97 | 0.82 to 1.15 | 0.97 | 0.82 to 1.15 | 0.95 | 0.78 to 1.17 |
| Other causes‡ | 553 | 0.90 | 0.84 to 0.96 | 0.90 | 0.84 to 0.96 | 0.92 | 0.85 to 0.99 |
The participants were men and women aged 65 years or over living in the study areas in 1999.
↵* Adjusted for age and sex.
↵† Adjusted for age, sex, smoking category, BMI category, hypertension, diabetes and financial capability.
↵‡ Mortality from other causes is defined as deaths due to causes other than cardiopulmonary disease or lung cancer.
BMI, body mass index; COPD, chronic obstructive pulmonary disease.