Hostname: page-component-78c5997874-xbtfd Total loading time: 0 Render date: 2024-11-16T17:26:36.150Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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

REFERENCES

1.Allen, G (1981): Errors of Weinberg's difference method. In Gedda, L, Parisi, P, Nance, WE (eds): Twin Research 3: Twin Biology and Multiple Pregnancy. New York: Alan R Liss, pp 71–74.Google Scholar
2.Corney, G, Robson, EB, Strong, SJ (1972): The effect of zygosity on the birthweight of twins. Ann Hum Genet 36:45–59.Google Scholar
3.Elwood, JM (1985): Temporal trends in twinning. In Kalter, H (ed): Issues and Reviews in Teratology, 3. New York and London: Plenum Press, pp 65–93.CrossRefGoogle Scholar
4.Emery, AEH (1986): Identical twinning and oral contraception. Biology Soc 3:23–27.Google Scholar
5.Fleiss, JL (1981): Statistical Methods for Rates and Proportions. Chichester, England: John Wiley, pp 112–119.Google Scholar
6.Hémon, D, Berger, C, Lazar, P (1981): Twinning following oral contraceptive discontinuation. Int J Epidemiol 10:319–328.CrossRefGoogle ScholarPubMed
7.James, WH (1972) Secular changes in dizygotic twinning rates. J Biosoc Sci 4:427–434.Google Scholar
8.James, WH (1976): The possibility of a flaw underlying Weinberg's differential rate. Ann Hum Genet 40: 197–199.Google Scholar
9.James, WH (1980): Secular changes in twinning rates in England and Wales. Ann Hum Biol 7: 485–487.Google Scholar
10.James, WH (1982): Second survey of secular trends in twinning rates. J Biosoc Sci 14:481–497.CrossRefGoogle ScholarPubMed
11.James, WH (1983): Twinning rates. Lancet i:934–935.Google Scholar
12.James, WH (1986): Recent secular trends in dizygotic twinning rates in Europe. J Biosoc Sci 18: 497–504.CrossRefGoogle ScholarPubMed
13.MacGillivray, I (1981): The probable explanation for the falling twinning rate in Scotland. In Gedda, L, Parisi, P, Nance, WE (eds): Twin Research 3: Twin Biology and Multiple Pregnancy. New York: Alan R Liss, pp 15–19.Google Scholar
14.Maccourt, DC, Stewart, P, Zaki, M (1982): Multiple pregnancy and fetal abnormalities in association with orai contraceptive usage. Aust NZ J Obstet Gyneacol, 22:25–28.Google Scholar
15.Samphier, M, and Thompson, B (1981): The Aberdeen maternity and neonatal and data bank. In: Prospective longitudinal research. Mednick, SA, Baert, AE (eds): Oxford: Oxford University Press.Google Scholar
16.Thompson, B, Campbell, DM, MacGillilvray, I (1982): Twinning and oral contraception in North East Scotland. Paper presented at the International Workshop on Multiple Pregnancies, Malmö, Sweden. Unpublished.Google Scholar