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Table 4 The influence of respiratory health indicators (diagnoses and symptoms), assessed at baseline investigation, on the association between air pollution exposure (traffic, NO2, PM10) and cardiovascular mortality in a cohort of women aged 55 years at baseline investigation; results of a Cox' regression analysis.

From: Does respiratory health contribute to the effects of long-term air pollution exposure on cardiovascular mortality?

 

<50 m distance to major road

NO 2 [16ÎĽg/m 3 ] (five-year mean) 1

PM 10 [7ÎĽg/m 3 ] (five-year mean) 1

 

RR

95%-CI

p-value

RR

95%-CI

p-value

RR

95%-CI

p-value

n/N

 

120/4457

  

97/4198

  

97/4198

 

Model (a), adjusted for potential confounders3

1.67

0.98–2.83

0.0573

1.72

1.24–2.39

0.0011

1.64

1.15–2.33

0.0056

Model (b), additionally adjusted for

Chronic Bronchitis by physician diagnose

1.63

0.96–2.76

0.0693

1.69

1.22–2.35

0.0017

1.62

1.14–2.30

0.0073

Frequent cough with phlegm production

1.71

1.01–2.88

0.0478

1.70

1.22–2.36

0.0015

1.62

1.14–2.31

0.0071

Frequent cough

1.71

1.01–2.88

0.0469

1.71

1.23–2.37

0.0013

1.63

1.15–2.32

0.0067

  1. 1 Analyses on long term exposure to air pollution were made on subjects who were living longer than five years under their current address.
  2. 2 Current smoking at the time of entering the study, no further adjustment for exposure to tobacco smoking
  3. 3 Educational level and smoking
  4. Abbreviations:
  5. RR: Risk ratio; CI: Confidence interval; n/N: number of dead and sample size
  6. Model (a)/(b): see text