Length of gestation and birthweight in dizygotic twins

被引：78

作者：

Loos, RJF ^{[1
]}

Derom, C

Eeckels, R

Derom, R

Vlietinck, R

机构：

[1] Fac Med, Ctr Human Genet, B-3000 Louvain, Belgium

[2] Katholieke Univ Leuven, Dept Sport & Movement Sci, Fac Phys Educ & Physiotherapy, Louvain, Belgium

[3] Katholieke Univ Leuven, Fac Med, Dept Paediat, Louvain, Belgium

[4] Assoc Sci Res Multiple Births, Destelbergen, Belgium

来源：

LANCET | 2001年 / 358卷 / 9281期

关键词：

D O I：

10.1016/S0140-6736(01)05716-6

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

Despite the longer gestation of girls, their birthweight Is less than that of boys. Because unlike-sex twins provide a natural situation In which to Investigate the Influence of sex on gestation, we compared birthweight and gestation of 1929 same-sex and unlike-sex dizygotic pairs. Length of gestation In unlike-sex pairs was similar to that of female same-sex pairs, and significantly (0.4 weeks; p=0.02) longer than that of male same-sex pairs. Birthweight of girls from unlike-sex pairs was similar to that of girls from same-sex pairs, but boys from unlike-sex pairs weighed 78 g more than boys from same-sex pairs (p=0.001). These data show that In unlike-sex palm It Is the girl that prolongs gestation for her brother, resulting In a higher birthweight than that of same-sex boys.

引用

页码：560 / 561

页数：2

共 5 条

[1] Causes of prematurity III Influence of race and sex on duration of gestation and weight at birth [J].