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Patterns of Smoking Behaviour in Low-Income Pregnant Women: A Cohort Study of Differential Effects on Infant Birth Weight

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Listed:
  • Catherine Hayes

    (Discipline of Public Health and Primary Care, Trinity College Dublin, Dublin 2, Ireland)

  • Morgan Kearney

    (Department of Obstetrics and Gynaecology, The Rotunda Hospital, Dublin 1, Ireland)

  • Helen O’Carroll

    (Department of Obstetrics and Gynaecology, The Rotunda Hospital, Dublin 1, Ireland)

  • Lina Zgaga

    (Discipline of Public Health and Primary Care, Trinity College Dublin, Dublin 2, Ireland)

  • Michael Geary

    (Department of Obstetrics and Gynaecology, The Rotunda Hospital, Dublin 1, Ireland)

  • Cecily Kelleher

    (School of Public Health, Physiotherapy and Sports Science, University College Dublin, Dublin 4, Ireland)

Abstract

Maternal smoking accounts for 20%–30% of low birth weight (BW). Second-Hand Smoke (SHS) also negatively affects BW. This cohort study explored the differential effect of smoking patterns during pregnancy on infant BW. Smoking status for 652 self-reported smokers attending public ante-natal clinics was assessed at baseline (V1 first ante-natal visit), 28–32 weeks (V2) and one week after birth (V3). Multivariable generalised linear regression models tested smoking patterns (continuing to smoke, sustained quitting, partial quitting) on BW adjusting for household smoking and other co-variates. Total quitting showed a median increase of 288 g in BW (95% CI (confidence intervals): 153.1–423 g, p < 0.001), compared to partial quitting (147 g, (95% CI: 50–244 g), p < 0.003). In partial quitters, increased BW was observed only in females 218 g, (95% CI: 81–355 g), p = 0.002). Household SHS showed a specific negative influence on pre-term but not term BW. This study suggests that, for low-income women, quitting or partial quitting during pregnancy both have a positive influence on infant BW. Whether others in the household smoke is also important.

Suggested Citation

  • Catherine Hayes & Morgan Kearney & Helen O’Carroll & Lina Zgaga & Michael Geary & Cecily Kelleher, 2016. "Patterns of Smoking Behaviour in Low-Income Pregnant Women: A Cohort Study of Differential Effects on Infant Birth Weight," IJERPH, MDPI, vol. 13(11), pages 1-15, October.
    • Handle: RePEc:gam:jijerp:v:13:y:2016:i:11:p:1060-:d:81674
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    References listed on IDEAS

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    1. Hong Cui & Ting-Ting Gong & Cai-Xia Liu & Qi-Jun Wu, 2016. "Associations between Passive Maternal Smoking during Pregnancy and Preterm Birth: Evidence from a Meta-Analysis of Observational Studies," PLOS ONE, Public Library of Science, vol. 11(1), pages 1-18, January.
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