Table 2 Adjusted odds ratios (ORs) and 95% confidence intervals (CIs) for the association between invasive breast cancer and mean exposure to PMa, by menopausal status during follow-up.

From: Long-term atmospheric exposure to particulate matter and breast cancer risk: findings from a nested case-control study in France

  

PM2.5 mean exposure

PM10 mean exposure

 

Matched pairs (1:1)

Adjusted ORb (95% CI)

P-valuec

Adjusted ORb (95% CI)

P-valuec

Premenopausal

591

1.11 (0.79–1.56)

0.99

1.01 (0.81–1.27)

0.93

Change in menopausal statusd

1958

1.07 (0.85–1.35)

1.03 (0.88–1.20)

Postmenopausal

1991

1.11 (0.90–1.38)

1.06 (0.93–1.22)

  1. XENAIR case-control study nested in the E3N-Generation cohort, France, 1990–2011.
  2. PM2.5, particulate matters with a diameter <2.5 µm; PM10, particulate matters with a diameter <10 µm.
  3. Matched pairs (1:1): number of case-control pairs included in the analyses. Each pair consists of one case and one matched control.
  4. The OR (95% CI) corresponds to an increment of 10 µg/m3 of mean exposure.
  5. aExposure to PM was estimated using a LUR model.
  6. bAdjusted for level of education and urban/rural status at inclusion.
  7. cp-values derived from the likelihood ratio test testing the interaction terms.
  8. dWomen who were premenopausal at inclusion and were postmenopausal at index date.
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