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Does the Use of Oral Contraception Depress DZ Twinning Rates?

Published online by Cambridge University Press:  01 August 2014

D. Campbell ,
B. Thompson ,
C. Pritchard  and
M. Samphier
D. Campbell*
Affiliation:
Department of Obstetrics and Gynaecology, University of Aberdeen
B. Thompson
Affiliation:
MRC Medical Sociology Unit, University of Aberdeen
C. Pritchard
Affiliation:
MRC Medical Sociology Unit, University of Glasgow, Scotland
M. Samphier
Affiliation:
MRC Medical Sociology Unit, University of Glasgow, Scotland
*
Department of Obstetrics and Gynecology, University of Aberdeen, Foresterhill, AB9 2ZD, Scotland

Abstract

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Data based on total births from a geographically defined population with zygosity determined from blood samples and placentation and with data on the use of oral contraceptives routinely collected in early pregnancy showed no association between oral contraceptive use prior to pregnancy in either MZ or DZ twinning. Three mutually exclusive control groups of singletons were used to take account of age, parity and secular trends.

Keywords

Twinning rateOral contraceptionSecular trend
Type
Research Article
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 36 , Issue 3 , July 1987 , pp. 409 - 415
Copyright
Copyright © The International Society for Twin Studies 1987

References

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