Document Detail

The influence of maternal cigarette smoking, snuff use and passive smoking on pregnancy outcomes: the Birth To Ten Study.
MedLine Citation:
PMID:  16466427     Owner:  NLM     Status:  MEDLINE    
This article describes the patterns and effects of maternal snuff use, cigarette smoking and exposure to environmental tobacco smoke during pregnancy on birthweight and gestational age, in women living in Johannesburg and Soweto in 1990. A cohort of 1593 women with singleton live births provided information about their own and household members' usage of tobacco products during pregnancy. The women completed a questionnaire while attending antenatal services. Data on gestational age and birthweight were obtained from birth records. Women who smoked cigarettes or used snuff during pregnancy accounted for 6.1% and 7.5% of the study population respectively. The mean birthweight of non-tobacco users was 3148 g [95% CI 3123, 3173] and that of the smokers 2982 g [95% CI 2875, 3090], resulting in a significantly lower mean birthweight of 165 g for babies of smoking mothers (P = 0.005). In contrast, women using snuff gave birth to infants with a mean birthweight of 3118 g [95% CI 3043, 3192], which is a non-significant (P = 0.52) decrease (29.4 g) in their infants' birthweights compared with those not using tobacco. A linear regression analysis identified short gestational age, female infant, a mother without hypertension during pregnancy, coloured (mixed racial ancestry), and Asian infants compared with black infants, lower parity, less than 12 years of education and smoking cigarettes as significant predictors of low birthweight, while the use of snuff during pregnancy was not associated with low birthweight. The snuff users, however, had a significant shorter gestational age than the other two groups of women. The birthweight reduction adjusted for possible confounders was 137 g [95% CI 26.6, 247.3 (P = 0.015)] for cigarette smokers and 17.1 g [95% CI -69.5, -102.7, P = 0.69] for snuff users respectively, compared with the birthweight of non-tobacco users. Among women who did not smoke cigarettes or use snuff, exposure to environmental tobacco smoke did not result in significant effects on the birthweight of their infants. In conclusion, infants of cigarette smokers had significantly lower birthweights than those of non-tobacco users or snuff users who are exposed to nicotine during pregnancy. Passive smoking did not affect birthweight significantly in this population.
Krisela Steyn; Thea de Wet; Yussuf Saloojee; Hannelie Nel; Derek Yach
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Paediatric and perinatal epidemiology     Volume:  20     ISSN:  0269-5022     ISO Abbreviation:  Paediatr Perinat Epidemiol     Publication Date:  2006 Mar 
Date Detail:
Created Date:  2006-02-09     Completed Date:  2006-05-30     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8709766     Medline TA:  Paediatr Perinat Epidemiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  90-9     Citation Subset:  IM    
Chronic Diseases of Lifestyle Unit, Medical Research Council, Parowvallei, South Africa.
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MeSH Terms
African Continental Ancestry Group
Asia / ethnology
Birth Weight*
Cohort Studies
Educational Status
Gestational Age*
Infant, Newborn
Infant, Small for Gestational Age
Longitudinal Studies
Pregnancy Complications / epidemiology
Pregnancy Outcome / epidemiology,  ethnology
Smoking / adverse effects*
Socioeconomic Factors
South Africa / epidemiology
Tobacco Smoke Pollution / adverse effects*
Tobacco, Smokeless / adverse effects*
Reg. No./Substance:
0/Tobacco Smoke Pollution

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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