Effects of fetal sex and race on risk of very preterm birth in twins

OBJECTIVE: Our purpose was to determine whether the risk of twin preterm birth correlates with the number of male fetuses. STUDY DESIGN: Among 8109 white and 1884 black twin pregnancies in the Missouri Successive Pregnancy Birth/Death Data Set, 1978 through 1990, risk for preterm birth at various ge...

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Bibliographic Details
Published in:American journal of obstetrics and gynecology 1998-09, Vol.179 (3), p.762-765
Main Authors: Cooperstock, Michael S., Bakewell, Janice, Herman, Allen, Schramm, Wayne F.
Format: Article
Language:English
Subjects:
African Continental Ancestry Group
Biological and medical sciences
Continental Population Groups
Diseases of mother, fetus and pregnancy
European Continental Ancestry Group
Female
fetal sex
Fetus - physiology
Gynecology. Andrology. Obstetrics
Humans
Infant, Newborn
Infant, Premature
Likelihood Functions
Male
male fetuses
Medical sciences
multiple birth
Pregnancy
Pregnancy, Multiple - physiology
Pregnancy. Fetus. Placenta
Preterm birth
Risk Factors
Sex Characteristics
Twins
Twins, Monozygotic - statistics & numerical data
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Summary:OBJECTIVE: Our purpose was to determine whether the risk of twin preterm birth correlates with the number of male fetuses. STUDY DESIGN: Among 8109 white and 1884 black twin pregnancies in the Missouri Successive Pregnancy Birth/Death Data Set, 1978 through 1990, risk for preterm birth at various gestational ages was determined with 0, 1, or 2 male infants. RESULTS: Studied as individuals, white preterm twins
ISSN:0002-9378
1097-6868
DOI:10.1016/S0002-9378(98)70079-1