Int. J. Environ. Res. Public Health 2012, 9(10), 3398-3420; doi:10.3390/ijerph9103398
Article

Prenatal Secondhand Smoke Exposure and Infant Birth Weight in China

1 Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA 2 Department of Epidemiology and Biostatistics, School of Public Health, Drexel University, Philadelphia, PA 19102, USA 3 Department of Preventive Medicine, Keck School of Medicine and USC Institute for Global Health, University of Southern California, Los Angeles, CA 90089, USA 4 Chinese Center for Disease Control and Prevention, Beijing 100050, China 5 Center for Public Health Surveillance and Information Service, Chinese Center for Disease Control and Prevention, Beijing 100050, China 6 National Tobacco Control Office, Chinese Center for Disease Control and Prevention, Beijing 100050, China 7 Department of Medicine, University of Mississippi Medical Center, Jackson, MS 39213, USA 8 Department of Environmental Health Sciences, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
* Author to whom correspondence should be addressed.
Received: 6 January 2012; in revised form: 5 September 2012 / Accepted: 17 September 2012 / Published: 26 September 2012
(This article belongs to the Special Issue Maternal and Child Health)
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Abstract: 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.
Keywords: secondhand smoke; China; birth weight; pregnancy; perinatal; epidemiology

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MDPI and ACS Style

Lee, N.L.; Samet, J.M.; Yang, G.; Zhou, M.; Yang, J.; Correa, A.; Lees, P.S.J. Prenatal Secondhand Smoke Exposure and Infant Birth Weight in China. Int. J. Environ. Res. Public Health 2012, 9, 3398-3420.

AMA Style

Lee NL, Samet JM, Yang G, Zhou M, Yang J, Correa A, Lees PSJ. Prenatal Secondhand Smoke Exposure and Infant Birth Weight in China. International Journal of Environmental Research and Public Health. 2012; 9(10):3398-3420.

Chicago/Turabian Style

Lee, Nora L.; Samet, Jonathan M.; Yang, Gonghuan; Zhou, Maigeng; Yang, Jie; Correa, Adolfo; Lees, Peter S. J. 2012. "Prenatal Secondhand Smoke Exposure and Infant Birth Weight in China." Int. J. Environ. Res. Public Health 9, no. 10: 3398-3420.

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