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Comparison of Naturally Conceived and IVF-DZ Twins in the Netherlands Twin Registry: A Developmental Study
Author(s) -
C.E.M. van Beijsterveldt,
Meike Bartels,
Dorret I. Boomsma
Publication year - 2011
Publication title -
journal of pregnancy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.828
H-Index - 32
eISSN - 2090-2735
pISSN - 2090-2727
DOI - 10.1155/2011/517614
Subject(s) - medicine , offspring , developmental psychology , developmental milestone , pregnancy , demography , twin study , obstetrics , pediatrics , psychology , heritability , genetics , sociology , biology
In a large set of twin pairs, we compared twins born after IVF to naturally conceived twins with respect to birth characteristics, growth, attainment of motor milestones, and emotional and behavioral problems. Twin families were registered with the Netherlands Twin Register. We included 1534 dizygotic (DZ) twins born after IVF, 5315 naturally conceived (NC) DZ twins, and 1504 control NC DZ twins who were matched to the IVF twins based on maternal age, maternal educational level, smoking during pregnancy, gestational age, and offspring sex. Data were obtained by longitudinal surveys sent to fathers, mothers, and teachers at ages 1, 2, 3, 7, 10, and 12 years. Results showed no differences in growth, in attainment of motor milestones, and in behavioral development between IVF and matched NC twins. It can be concluded that for nearly all aspects, development in IVF and NC children is similar.

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