Journal of Preventive Medicine and Public Health

The Korean Society for Preventive Medicine (대한예방의학회)
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Maternal Exposure to Environmental Tobacco Smoke(ETS) and Pregnancy Outcome(low birth weight or preterm baby) in Prospective Cohort Study

임산부 간접흡연과 저체중아 및 조산아 출생에 관한 코호트 연구

  • Lee, Bo-Eun (Department of Preventive Medicine, College of Medicine, Ewha Womans University) ;
  • Hong, Yun-Chul (Department of Occupational and Environmental Medicine, Inha University College of Medicine) ;
  • Park, Hye-Sook (Department of Preventive Medicine, College of Medicine, Ewha Womans University) ;
  • Lee, Jong-Tae (Department of Preventive Medicine, College of Medicine, Ewha Womans University) ;
  • Kim, Jeong-Youn (Department of Preventive Medicine, College of Medicine, Ewha Womans University) ;
  • Kim, Young-Joo (Department of Obstetrics & Gynecology, College of Medicine, Ewha Womans University) ;
  • Kim, Sang-Hyun (Department of Occupational and Environmental Medicine, Inha University College of Medicine) ;
  • Kang, Jung-Goo (Sanborn Jeil Womans Hospital) ;
  • Kim, Joo-Oh (Department of Obstetrics & Gynecology, Samsung Cheil Hospital & Women's Healthcare Center, Sungkyunkwan Univerity School of Medicien) ;
  • Ha, Eun-Hee (Department of Preventive Medicine, College of Medicine, Ewha Womans University)
  • Published : 2003.06.01
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Abstract

Objectives : This study was performed to examine the relationship between maternal exposure to environmental tobacco smoke (ETS) and pregnancy outcomes (low birth weight or preform baby) in a prospective cohort study. Methods : We made a pregnant women's cohort, and followed the pregnancy outcomes, between May 1st 2001 and August 31st 2002. We surveyed 2,250 women who visited our hospital during their 35th gestational week, with a self-administered questionnaire. The final total of mother-infant pairs analyzed in this study was 1,712. We used a multiple logistic regression analysis to analyze the effect of maternal ETS on the incidence of preform or low birth weight, and a linear regression analysis for the birth weight and gestational age. Results : Higher exposure to ETS (>=1 hours/day) during pregnancy was more negatively associated with the gestational age and birth weight, than no exposure to ETS (no or less than 1 hour). Maternal exposure to ETS was associated with preform baby(adjusted odds ratio (AOR) 1.7; 95% confidence interval (CI) 0.9, 3.3) and low birth weight (AOR 2.3; 95% CI 0.9, 5.5). In addition, we found that maternal ETS may reduce the birth weight by 70g after adjusting for potential confounding factors. Conclusions : This study suggests that maternal exposure to ETS during pregnancy may increase the frequency of low birth weights and preform births.

Keywords

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