Birth order and delivery interval: Analysis of twin pair perinatal outcomes

Author: Hartley Rebecca   Hitti Jane  

Publisher: Informa Healthcare

ISSN: 1476-4954

Source: Journal of Maternal-Fetal and Neonatal Medicine, Vol.17, Iss.6, 2005-06, pp. : 375-380

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Abstract

Objective . To determine whether second-born twins (B) have higher morbidity and mortality than first-born twins (A), using a paired analysis. Study design . We conducted a retrospective analysis of birth certificates and fetal and infant death certificates for 5138 twin pairs selected from those born in Washington State from 1989 to 2001. Twin A was vertex and delivered vaginally. Pairs were not size-discordant (?

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