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BMC Pregnancy and Childbirth
Published in: BMC Pregnancy and Childbirth 1/2020

Open Access 01-12-2020 | Smoking and Nicotine Detoxification | Research article

Low birthweight of children is positively associated with mother’s prenatal tobacco smoke exposure in Shanghai: a cross-sectional study

Authors: Ruiping Wang, Ting Sun, Qiong Yang, Qing Yang, Jian Wang, Huan Li, Yue Tang, Liang Yang, Jie Sun

Published in: BMC Pregnancy and Childbirth | Issue 1/2020

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Abstract

Introduction

Low birthweight (LBW) is a significant public health issue, and maternal smoking is the most prevalent preventable cause of LBW. But there is limited evidence on association of LBW among children and cigarette smoke exposure in mothers in China. In this cross-sectional study, we try to explore if the LBW in children is positively associated with mothers’ prenatal cigarette smoke exposure.

Methods

We selected 8, 586 mothers and their singleton children in 2018 in Songjiang district, Shanghai. Birthweight of children and gestational weeks of mother was identified by birth records in the hospital, we classified mothers’ prenatal cigarette smoke status into the first-hand smoke (FHS) exposure and the second-hand smoke (SHS) exposure. We use SAS 9.1.3 software to calculate the prevalence of children’s LBW and the prevalence of mothers’ prenatal cigarette smoke exposure including FHS and SHS. Chi-square test and logistic regression were used to analyze the difference.

Results

In 8, 586 women, The prenatal FHS and SHS exposure prevalence was 0.9 and 20.8%, respectively. The mean birthweight of children was 3315.5 g with a standard deviation of 497.2 g, the mean birthweight was 167.7 g and 66.1 g lower in children born to mothers with prenatally FHS and SHS exposure compared with those children whose mother were not exposed, respectively. The children’s LBW prevalence was 4.7% in this study. By comparing with children whose mother were not exposed, the LBW prevalence was higher among children whose mother were prenatally exposed to FHS [OR (Odds Ratios) = 2.91, 95% confidence interval (CI) (1.49, 5.68)], and SHS [OR = 2.35, 95% CI (1.90, 2.89)].

Conclusions

Children’s LBW is positively associated with mothers’ prenatal tobacco smoke exposure both for FHS and SHS. So implementing tobacco control measures is crucial to lower smoking prevalence among women, and decrease smoking prevalence of their family members as well as work fellows.
Appendix
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Metadata
Title
Low birthweight of children is positively associated with mother’s prenatal tobacco smoke exposure in Shanghai: a cross-sectional study
Authors
Ruiping Wang
Ting Sun
Qiong Yang
Qing Yang
Jian Wang
Huan Li
Yue Tang
Liang Yang
Jie Sun
Publication date
01-12-2020
Publisher
BioMed Central
Published in
BMC Pregnancy and Childbirth / Issue 1/2020
Electronic ISSN: 1471-2393
DOI
https://doi.org/10.1186/s12884-020-03307-x

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