RT Journal Article
SR Electronic
T1 Snus in pregnancy and infant birth size: a mother–child birth cohort study
JF ERJ Open Research
JO erjor
FD European Respiratory Society
SP 00255-2019
DO 10.1183/23120541.00255-2019
VO 5
IS 4
A1 Ina Kreyberg
A1 Katarina Hilde
A1 Karen Eline S. Bains
A1 Kai-Håkon Carlsen
A1 Berit Granum
A1 Guttorm Haugen
A1 Gunilla Hedlin
A1 Christine M. Jonassen
A1 Live S. Nordhagen
A1 Björn Nordlund
A1 Corina S. Rueegg
A1 Katrine D. Sjøborg
A1 Håvard O. Skjerven
A1 Anne C. Staff
A1 Riyas Vettukattil
A1 Karin C. Lødrup Carlsen
A1 the PreventADALL Study Group
YR 2019
UL http://openres.ersjournals.com/content/5/4/00255-2019.abstract
AB Rationale While recent studies show that maternal use of snus during pregnancy is increasing, the potential effects on infant birth size is less investigated, with conflicting results.Objectives We aimed to determine if maternal use of snus during pregnancy influences the infant anthropometric and proportional size measures at birth.Methods In 2313 mother–child pairs from the population-based, mother–child birth cohort PreventADALL (Preventing Atopic Dermatitis and ALLergies) in Norway and Sweden, we assessed nicotine exposure by electronic questionnaire(s) at 18 and 34 weeks of pregnancy, and anthropometric measurements at birth. Associations between snus exposure and birth size outcomes were analysed by general linear regression.Results Birthweight was not significantly different in infants exposed to snus in general, and up to 18 weeks of pregnancy in particular, when adjusting for relevant confounders including maternal age, gestational age at birth, pre-pregnancy body mass index, parity, fetal sex and maternal gestational weight gain up to 18 weeks. We found no significant effect of snus use on the other anthropometric or proportional size measures in multivariable linear regression models. Most women stopped snus use in early pregnancy.Conclusion Exposure to snus use in early pregnancy, with most women stopping when knowing about their pregnancy, was not associated with birth size. We were unable to conclude on effects of continued snus use during pregnancy because of lack of exposure in our cohort.Snus use in pregnancy, reported by 7.1% of 2313 women, was not associated with infant birth size. As most women stopped snus use by 6 weeks gestational age, it was not possible to assess potential birth size effects of persistent use during pregnancy. http://bit.ly/2IG8Vnk