Document Detail

Prenatal secondhand smoke exposure and infant birth weight in China.
MedLine Citation:
PMID:  23202753     Owner:  NLM     Status:  MEDLINE    
Epidemiologic evidence provides some support for a causal association between maternal secondhand smoke (SHS) exposure during pregnancy and reduction in infant birth weight. The purpose of this cross-sectional study is to examine the magnitude of this association in China, where both prevalence and dose of SHS exposure are thought to be higher than in U.S. populations. Women who gave birth in Beijing and Changchun September 2000-November 2001 were interviewed to quantify self-reported prenatal SHS exposure. Their medical records were reviewed for data on pregnancy complications and birth outcomes. Non-smoking women who delivered term babies (≥37 weeks gestation) were included in the study (N = 2,770). Nearly a quarter of the women (24%) reported daily SHS exposure, 47% reported no prenatal exposure, and 75% denied any SHS exposure from the husband smoking at home. Overall, no deficit in mean birth weight was observed with exposure from all sources of SHS combined (+11 grams, 95% CI: +2, +21). Infants had higher mean birth weights among the exposed than the unexposed for all measures of SHS exposure. Future studies on SHS exposure and infant birth weight in China should emphasize more objective measures of exposure to quantify and account for any exposure misclassification.
Nora L Lee; Jonathan M Samet; Gonghuan Yang; Maigeng Zhou; Jie Yang; Adolfo Correa; Peter S J Lees
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Publication Detail:
Type:  Journal Article     Date:  2012-09-26
Journal Detail:
Title:  International journal of environmental research and public health     Volume:  9     ISSN:  1660-4601     ISO Abbreviation:  Int J Environ Res Public Health     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-12-03     Completed Date:  2013-05-16     Revised Date:  2013-07-11    
Medline Journal Info:
Nlm Unique ID:  101238455     Medline TA:  Int J Environ Res Public Health     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  3398-420     Citation Subset:  IM    
Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA.
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MeSH Terms
Birth Weight*
China / epidemiology
Cross-Sectional Studies
Infant, Newborn
Maternal Exposure
Maternal-Fetal Exchange
Tobacco Smoke Pollution*
Young Adult
Reg. No./Substance:
0/Tobacco Smoke Pollution

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