Hum. Reprod. Advance Access originally published online on July 7, 2006
Human Reproduction 2006 21(10):2638-2639; doi:10.1093/humrep/del246
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Associate editors commentary on the article Birth weight of singletons after assisted reproduction is higher after single than double embryo transfer by De Sutter et al.
How should we report on perinatal outcome?
Department of Obstetrics and Gynaecology, Academisch Ziekenhuis Maastricht, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands
E-mail: jlan{at}sgyn.azm.nl
Authors should report on neonatal outcome after ART in a well-defined and uniform way, to enable readers to compare the outcome of different studies. For reporting on birthweight, SD scores (z-scores) are to be preferred, customized for the most important physiological variables affecting birthweight, e.g. gestational age, gender of the child and whether it is a singleton or part of a multiple. It may be suggested that ESHRE should support the construction of European customized birthweight tables and make available a software for calculating the z-scores in cohorts.
Key words: birth weight/gestational age/neonatal outcome
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