Maternal Ambient Exposure to Atmospheric Pollutants during Pregnancy and Offspring Term Birth Weight in the Nationwide ELFE Cohort - Ineris - Institut national de l'environnement industriel et des risques Accéder directement au contenu
Article Dans Une Revue International Journal of Environmental Research and Public Health Année : 2021

Maternal Ambient Exposure to Atmospheric Pollutants during Pregnancy and Offspring Term Birth Weight in the Nationwide ELFE Cohort

Emmanuel Rivière
  • Fonction : Auteur
  • PersonId : 1103012
Julien Bernard
  • Fonction : Auteur
  • PersonId : 1103013
Anne Laborie
  • Fonction : Auteur
Pierre-Yves Robic
  • Fonction : Auteur
Jonathan Virga
  • Fonction : Auteur

Résumé

Background: Studies have reported associations between maternal exposure to atmospheric pollution and lower birth weight. However, the evidence is not consistent and uncertainties remain. We used advanced statistical approaches to robustly estimate the association of atmospheric pollutant exposure during specific pregnancy time windows with term birth weight (TBW) in a nationwide study. Methods: Among 13,334 women from the French Longitudinal Study of Children (ELFE) cohort, exposures to PM2.5, PM10 (particles < 2.5 mu m and <10 mu m) and NO2 (nitrogen dioxide) were estimated using a fine spatio-temporal exposure model. We used inverse probability scores and doubly robust methods in generalized additive models accounting for spatial autocorrelation to study the association of such exposures with TBW. Results: First trimester exposures were associated with an increased TBW. Second trimester exposures were associated with a decreased TBW by 17.1 g (95% CI, -26.8, -7.3) and by 18.0 g (-26.6, -9.4) for each 5 mu g/m(3) increase in PM2.5 and PM10, respectively, and by 15.9 g (-27.6, -4.2) for each 10 mu g/m(3) increase in NO2. Third trimester exposures (truncated at 37 gestational weeks) were associated with a decreased TBW by 48.1 g (-58.1, -38.0) for PM2.5, 38.1 g (-46.7, -29.6) for PM10 and 14.7 g (-25.3, -4.0) for NO2. Effects of pollutants on TBW were larger in rural areas. Conclusions: Our results support an adverse effect of air pollutant exposure on TBW. We highlighted a larger effect of air pollutants on TBW among women living in rural areas compared to women living in urban areas.
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Dates et versions

ineris-03268410 , version 1 (23-06-2021)

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Marion Ouidir, Emie Seyve, Emmanuel Rivière, Julien Bernard, Marie Cheminat, et al.. Maternal Ambient Exposure to Atmospheric Pollutants during Pregnancy and Offspring Term Birth Weight in the Nationwide ELFE Cohort. International Journal of Environmental Research and Public Health, 2021, 18 (11), pp.5806. ⟨10.3390/ijerph18115806⟩. ⟨ineris-03268410⟩
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