Waiting time to pregnancy according to maternal birthweight and prepregnancy BMI

Ellen Aagaard Nøhr, M Vaeth, Steen Rasmussen, C H Ramlau-Hansen, Jørn Olsen

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Udgivelsesdato: 2009-Jan
OriginalsprogEngelsk
TidsskriftHuman Reproduction
Vol/bind24
Udgave nummer1
Sider (fra-til)226-32
Antal sider6
ISSN0268-1161
DOI
StatusUdgivet - 2008
Udgivet eksterntJa

Fingeraftryk

Mothers
Odds Ratio
Confidence Intervals

Citer dette

Nøhr, Ellen Aagaard ; Vaeth, M ; Rasmussen, Steen ; Ramlau-Hansen, C H ; Olsen, Jørn. / Waiting time to pregnancy according to maternal birthweight and prepregnancy BMI. I: Human Reproduction. 2008 ; Bind 24, Nr. 1. s. 226-32.
@article{c700d26e8dc04d7486e2269809b21702,
title = "Waiting time to pregnancy according to maternal birthweight and prepregnancy BMI",
abstract = "BACKGROUND: An association between a woman's own birthweight and her fecundity has been suggested, but no empirical data have been published on the association between maternal birthweight and waiting time to pregnancy (TTP). METHODS: In the Danish National Birth Cohort (1996-2002), which is an ongoing study of 92 274 women and their pregnancies, information about TTP and prepregnancy BMI was collected during pregnancy. At the 7-year follow-up of the children, 21 786 mothers reported their own birthweight and whether they were born at term or preterm. The association between maternal birthweight and TTP is presented as adjusted odds ratios with 95{\%} confidence intervals. RESULTS: Low maternal birthweight (< or =2500 g for term and < or =1500 g for preterm birth) was associated with an increased risk of TTP of >1 year [term: 1.2 (1.0-1.5); preterm: 1.8 (1.1-3.1)]. The latter association was strongest in women with a BMI < 25 kg/m(2) [2.6 (1.4-4.7)]. High maternal birthweight (>4500 g for term and >3500 g for preterm) was also associated with an increased risk of TTP of >1 year [1.5 (1.0-2.0) and 1.3 (0.7-2.4), respectively], especially in women with a BMI > or = 25 kg/m(2) [1.8 (1.1-3.1) and 2.5 (1.0-6.4), respectively]. CONCLUSIONS: High or low maternal birthweight was associated with TTP > 1 year. Longer waiting times in women with very low birthweight may reflect an effect of being born very preterm. Subfecundity may partly be programmed in foetal life by factors that cause or correlate with foetal growth.",
author = "N{\o}hr, {Ellen Aagaard} and M Vaeth and Steen Rasmussen and Ramlau-Hansen, {C H} and J{\o}rn Olsen",
year = "2008",
doi = "10.1093/humrep/den357",
language = "English",
volume = "24",
pages = "226--32",
journal = "Human Reproduction",
issn = "0268-1161",
publisher = "Heinemann",
number = "1",

}

Waiting time to pregnancy according to maternal birthweight and prepregnancy BMI. / Nøhr, Ellen Aagaard; Vaeth, M; Rasmussen, Steen; Ramlau-Hansen, C H; Olsen, Jørn.

I: Human Reproduction, Bind 24, Nr. 1, 2008, s. 226-32.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Waiting time to pregnancy according to maternal birthweight and prepregnancy BMI

AU - Nøhr, Ellen Aagaard

AU - Vaeth, M

AU - Rasmussen, Steen

AU - Ramlau-Hansen, C H

AU - Olsen, Jørn

PY - 2008

Y1 - 2008

N2 - BACKGROUND: An association between a woman's own birthweight and her fecundity has been suggested, but no empirical data have been published on the association between maternal birthweight and waiting time to pregnancy (TTP). METHODS: In the Danish National Birth Cohort (1996-2002), which is an ongoing study of 92 274 women and their pregnancies, information about TTP and prepregnancy BMI was collected during pregnancy. At the 7-year follow-up of the children, 21 786 mothers reported their own birthweight and whether they were born at term or preterm. The association between maternal birthweight and TTP is presented as adjusted odds ratios with 95% confidence intervals. RESULTS: Low maternal birthweight (< or =2500 g for term and < or =1500 g for preterm birth) was associated with an increased risk of TTP of >1 year [term: 1.2 (1.0-1.5); preterm: 1.8 (1.1-3.1)]. The latter association was strongest in women with a BMI < 25 kg/m(2) [2.6 (1.4-4.7)]. High maternal birthweight (>4500 g for term and >3500 g for preterm) was also associated with an increased risk of TTP of >1 year [1.5 (1.0-2.0) and 1.3 (0.7-2.4), respectively], especially in women with a BMI > or = 25 kg/m(2) [1.8 (1.1-3.1) and 2.5 (1.0-6.4), respectively]. CONCLUSIONS: High or low maternal birthweight was associated with TTP > 1 year. Longer waiting times in women with very low birthweight may reflect an effect of being born very preterm. Subfecundity may partly be programmed in foetal life by factors that cause or correlate with foetal growth.

AB - BACKGROUND: An association between a woman's own birthweight and her fecundity has been suggested, but no empirical data have been published on the association between maternal birthweight and waiting time to pregnancy (TTP). METHODS: In the Danish National Birth Cohort (1996-2002), which is an ongoing study of 92 274 women and their pregnancies, information about TTP and prepregnancy BMI was collected during pregnancy. At the 7-year follow-up of the children, 21 786 mothers reported their own birthweight and whether they were born at term or preterm. The association between maternal birthweight and TTP is presented as adjusted odds ratios with 95% confidence intervals. RESULTS: Low maternal birthweight (< or =2500 g for term and < or =1500 g for preterm birth) was associated with an increased risk of TTP of >1 year [term: 1.2 (1.0-1.5); preterm: 1.8 (1.1-3.1)]. The latter association was strongest in women with a BMI < 25 kg/m(2) [2.6 (1.4-4.7)]. High maternal birthweight (>4500 g for term and >3500 g for preterm) was also associated with an increased risk of TTP of >1 year [1.5 (1.0-2.0) and 1.3 (0.7-2.4), respectively], especially in women with a BMI > or = 25 kg/m(2) [1.8 (1.1-3.1) and 2.5 (1.0-6.4), respectively]. CONCLUSIONS: High or low maternal birthweight was associated with TTP > 1 year. Longer waiting times in women with very low birthweight may reflect an effect of being born very preterm. Subfecundity may partly be programmed in foetal life by factors that cause or correlate with foetal growth.

U2 - 10.1093/humrep/den357

DO - 10.1093/humrep/den357

M3 - Journal article

VL - 24

SP - 226

EP - 232

JO - Human Reproduction

JF - Human Reproduction

SN - 0268-1161

IS - 1

ER -