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Table 4 Effect modification of the association a between MD and long-term exposure to traffic-related air pollution (NO 2 per 10 μg/m 3 , NO x per 20 μg/m 3 ) by menopause and smoking status, among 4,769 women

From: Long-term exposure to air pollution and mammographic density in the Danish Diet, Cancer and Health cohort

 

OR (95% CI)

OR (95% CI)

p-value

 

Premenopausal n =  839

Postmenopausal n  = 3,930

Baseline NOx

0.95 (0.88-1.03)

0.98 (0.94-1.01)

0.62

NOx since 1971

0.92 (0.83-1.03)

0.97 (0.92-1.01)

0.47

Baseline NO2

0.83 (0.67-1.01)

0.94 (0.87-1.02)

0.28

NO2 since 1971

0.77 (0.59-1.01)

0.91 (0.82-1.02)

0.27

 

Never smoker n = 1814

Ever smoker n = 2,955

 

Baseline NOx

0.96 (0.91-1.01)

0.98 (0.94-1.02)

0.66

NOx since 1971

0.96 (0.89-1.03)

0.97 (0.92-1.02)

0.84

Baseline NO2

0.91 (0.80-1.03)

0.94 (0.85-1.03)

0.70

NO2 since 1971

0.90 (0.75-1.06)

0.90 (0.79-1.02)

0.99

  1. BMI – body mass index; OR – odds ratio; CI – confidence interval; aadjusted for age, BMI, HRT status, HRT duration, number of children; alcohol use, alcohol intake (g/day), physical activity, education level; smoking status.
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Environmental Health

ISSN: 1476-069X