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Effect of Swedish snuff (snus) on preterm birth
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. (Obstetrisk forskning/Axelsson)
Department of Medicine, Clinical Epidemiology Unit, Karolinska Institutet, Stockholm, Sweden.
Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden.
Department of Medicine, Clinical Epidemiology Unit, Karolinska Institutet, Stockholm, Sweden.
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2010 (English)In: British Journal of Obstetrics and Gynecology, ISSN 1470-0328, E-ISSN 1471-0528, Vol. 117, no 8, 1005-1010 p.Article in journal (Refereed) Published
Abstract [en]

Objective To compare the effects of Swedish snuff and cigarette smoking on risks of preterm birth. Design Population-based cohort study. Setting Sweden. Population All live, singleton births in Sweden 1999-2006. Methods Odds ratios (OR) with 95% confidence intervals (CI) were used to estimate relative risks for preterm birth in snuff users (n = 7607), light smokers (1-9 cigarettes/day; n = 41 436) and heavy smokers (ten or more cigarettes/day; n = 16 951) using non-tobacco users (n = 503 957) as reference. Main outcome measures Very (< 32 weeks) and moderately (32-36 weeks) preterm birth. Results Compared with non-tobacco users, snuff users had increased risks of both very (adjusted OR 1.38; 95% CI 1.04-1.83) and moderately (adjusted OR 1.25; 95% CI 1.12-1.40) preterm birth. Compared with non-tobacco users, light smokers had increased risks of both very (adjusted OR 1.60; 95% CI 1.42-1.81) and moderately (adjusted OR: 1.18; 95% CI: 1.12-1.24) preterm birth, and heavy smokers had even higher risks. Among smokers, but not among snuff users, the risk was more pronounced for spontaneous than induced preterm birth. Conclusions The use of Swedish snuff was associated with increased risks of very and moderately preterm birth with both spontaneous and induced onsets. Swedish snuff is not a safe alternative to cigarette smoking during pregnancy.

Place, publisher, year, edition, pages
2010. Vol. 117, no 8, 1005-1010 p.
Keyword [en]
Pregnancy, premature birth, smokeless, snuff, tobacco
National Category
Obstetrics, Gynecology and Reproductive Medicine
Identifiers
URN: urn:nbn:se:uu:diva-135585DOI: 10.1111/j.1471-0528.2010.02575.xISI: 000278564100013OAI: oai:DiVA.org:uu-135585DiVA: diva2:376067
Available from: 2010-12-09 Created: 2010-12-07 Last updated: 2017-12-11Bibliographically approved

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Wikström, Anna-Karin

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