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Predicted Birthweight for Singletons and Twins

Published online by Cambridge University Press:  21 February 2012

Yingxin C. Liu  and
Eve M. Blair
Yingxin C. Liu*
Affiliation:
Center for Child Health Research, University of Western Australia. [email protected].
Eve M. Blair
Affiliation:
Center for Child Health Research, University of Western Australia.
*
*Address for correspondence: Yingxin Liu, Center for Child Health Research, University of Western Australia, TVW Telethon Institute for Child Health Research, 100 Roberts Road, Subiaco, WA 6008, Australia.

Abstract

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This population-based study determined the impact of co-twin gender on twin intrauterine growth in addition to their infant gender, maternal height, maternal age and parity on intrauterine growth rate of singletons and twins. All singletons and twins born in Western Australia during the period of 1980 to 1995 were considered for the study. The multiple linear regression models showed that 76% of the variance in the mean birthweight was explained by the selected variables for twins and 51% for singletons. Twins grew more slowly than singletons from 26 weeks gestation. Among twins, opposite-sex twin pairs grew consistently faster than like-sex twins. Primiparous twin pairs grew more slowly than subsequently born twins. These regression equations can be used to assess the appropriateness of intrauterine growth in twin pairs of various gender combinations.

Type
Articles
Information
Twin Research and Human Genetics , Volume 5 , Issue 6 , 01 December 2002 , pp. 529 - 537
Copyright
Copyright © Cambridge University Press 2002