Secular trends in gestational age and birthweight in twins
Author(s) -
Marij Gielen,
C.E.M. van Beijsterveldt,
Cathérine Derom,
Robert Vlietinck,
Jan G. Nijhuis,
Maurice P. Zeegers,
Dorret I. Boomsma
Publication year - 2010
Publication title -
human reproduction
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.446
H-Index - 226
eISSN - 1460-2350
pISSN - 0268-1161
DOI - 10.1093/humrep/deq160
Subject(s) - gestational age , obstetrics , gestation , medicine , dizygotic twins , demography , fertility , secular variation , pregnancy , live birth , pediatrics , population , biology , environmental health , genetics , sociology
In recent decades, the overall rate of preterm births has increased. The aim of the present study was to examine whether this trend is also seen for multiple gestations. More specifically, we examined if there has been a decrease in gestational age for live born monozygotic (MZ) and dizygotic (DZ) twins and if there has been a simultaneous change in birthweight. The contributions of fertility treatments and Caesarean sections were taken into consideration. All analyses were carried out in two large European twin cohorts.
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