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dc.contributor.authorMyklestad, Kirsti
dc.contributor.authorVatten, Lars Johan
dc.contributor.authorMagnussen, Elisabeth Balstad
dc.contributor.authorSalvesen, Kjell Å
dc.contributor.authorRomundstad, Pål Richard
dc.date.accessioned2015-09-22T11:00:34Z
dc.date.accessioned2016-05-10T08:24:40Z
dc.date.available2015-09-22T11:00:34Z
dc.date.available2016-05-10T08:24:40Z
dc.date.issued2013-02-05
dc.identifier.citationBMC Pregnancy and Childbirth 2013, 13nb_NO
dc.identifier.issn1471-2393
dc.identifier.urihttp://hdl.handle.net/11250/2388887
dc.description.abstractBackground: The objective of this study was to examine the association of maternal and paternal height with pregnancy length, and with the risk of pre- and post-term birth. In addition we aimed to study whether cardiovascular risk factors could explain possible associations. Methods: Parents who participated in the Nord-Trøndelag Health Study (HUNT 2; 1995–1997) were linked to offspring data from the Medical Birth Registry of Norway (1997–2005). The main analyses included 3497 women who had delivered 5010 children, and 2005 men who had fathered 2798 pregnancies. All births took place after parental participation in HUNT 2. Linear regression was used to estimate crude and adjusted differences in pregnancy length according to parental heights. Logistic regression was used to estimate crude and adjusted associations of parental heights with the risk of pre- and post-term births. Results: We found a gradual increase in pregnancy length by increasing maternal height, and the association was essentially unchanged after adjustment for maternal cardiovascular risk factors, parental age, offspring sex, parity, and socioeconomic measures. When estimated date of delivery was based on ultrasound, the difference between mothers in the lower height quintile (<163 cm cm) and mothers in the upper height quintile (≥ 173 cm) was 4.3 days, and when estimated date of delivery was based on last menstrual period (LMP), the difference was 2.8 days. Shorter women (< 163 cm) had lower risk of post-term births, and when estimated date of delivery was based on ultrasound they also had higher risk of pre-term births. Paternal height was not associated with pregnancy length, or with the risks of pre- and post-term births. Conclusions: Women with shorter stature had shorter pregnancy length and lower risk of post-term births than taller women, and when EDD was based on ultrasound, they also had higher risk of preterm births. The effect of maternal height was generally stronger when pregnancy length was based on second trimester ultrasound compared to last menstrual period. The association of maternal height with pregnancy length could not be explained by cardiovascular risk factors. Paternal height was neither associated with pregnancy length nor with the risk of pre- and post-term birth.nb_NO
dc.language.isoengnb_NO
dc.publisherBioMed Centralnb_NO
dc.rightsNavngivelse 3.0 Norge*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/no/*
dc.titleDo parental heights influence pregnancy length?: a population-based prospective study, HUNT 2nb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.date.updated2015-09-22T11:00:34Z
dc.source.volume13nb_NO
dc.source.journalBMC Pregnancy and Childbirthnb_NO
dc.source.issue33nb_NO
dc.identifier.doi10.1186/1471-2393-13-33
dc.identifier.cristin1030495
dc.description.localcode© Myklestad et al.; licensee BioMed Central Ltd. 2013. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://​creativecommons.​org/​licenses/​by/​2.​0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.nb_NO


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Navngivelse 3.0 Norge
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