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Coital frequency and twinning

Published online by Cambridge University Press:  31 July 2008

B. Bønnelykke ,
J. Olsen  and
J. Nielsen
B. Bønnelykke
Affiliation:
Cytogenetics Laboratory, Aarhus Psychiatric Hospital, Denmark
J. Olsen
Affiliation:
Institute of Social Medicine, University of Aarhus, Denmark
J. Nielsen
Affiliation:
Cytogenetics Laboratory, Aarhus Psychiatric Hospital, Denmark
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Summary

In a comparative study to enquire whether parents of twins, especially of dizygotic twins, have a higher frequency of sexual intercourse than parents of singleton infants, data on sociodemographic status, coital frequency and other variables were collected using a postal questionnaire. Parents of all twins born alive in Denmark in 1984 or 1985 were included as cases and a random sample of parents of singleton infants born in the same period were controls. No evidence of any difference in coital frequency was found between parents of twins (neither dizygotic twins nor monozygotic) and parents of singleton infants.

Information

Type
Research Article
Information
Journal of Biosocial Science , Volume 22 , Issue 2 , April 1990 , pp. 191 - 196
Copyright
Copyright © 1990, Cambridge University Press

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References

Allen, G. & Schachter, J. (1970) Do conception delays explain some changes in twinning rates? Acta Genet, med. Gemell. 19, 30.Google Scholar
Bishop, Y. M. M., Feinberg, S. E. & Holland, P. W. (1975) Discrete Multivariate Analysis: Theory and Practice. MIT Press, Cambridge, Massachusetts.Google Scholar
Bønnelykke, B., Hauge, M., Holm, N., Kristoffersen, K. & Gurtler, H. (1990) Evaluation of zygosity diagnosis in twin pairs below age seven by means of a mailed questionnaire (in press).Google Scholar
Bulmer, M. G. (1959) The effect of parental age, parity and duration of marriage on the twinning rate. Ann. hum. Genet. 23, 454.CrossRefGoogle ScholarPubMed
Bulmer, M. G. (1970) The Biology of Twinning in Man. Clarendon Press, Oxford.Google Scholar
James, W. H. (1971) Cycle day of insemination, coital rate, and sex ratio. Lancet, i, 112.CrossRefGoogle Scholar
James, W. H. (1972) Coital rates and dizygotic twinning. J. biosoc. Sci. 4, 101.CrossRefGoogle ScholarPubMed
James, W. H. (1980) Time of fertilisation and sex of infants. Lancet, i, 1124.CrossRefGoogle Scholar
James, W. H. (1981) Dizygotic twinning marital stage and status and coital rates. Ann. hum. Biol. 8, 371.Google Scholar
James, W. H. (1983) Decline in coital rates with spouses' ages and duration of marriage. J. biosoc. Sci. 15, 83.CrossRefGoogle ScholarPubMed
James, W. H. (1984) Coitus-induced ovulation and its implications for estimates of some reproductive parameters. Acta Genet, med. Gemell. 33, 547.Google ScholarPubMed
Jeanneret, O. & Macmahon, B. (1962) Secular changes in rates of multiple births in the US. Am. J. hum. Genet. 14, 410.Google Scholar
Kleinbaum, D. G., Kupper, L. L. & Morgenstern, H. (1982) Epidemiologic Research. Van Nostrand Reinhold, New York.Google Scholar
Mantel, N. & Haenszel, W. (1959) Statistical aspects of the analysis of data from retrospective studies of disease. J. natn. Cancer Inst. 22, 719.Google ScholarPubMed
Nylander, P. P. S. (1981) The factors that influence twinning rates. Acta Genet, med. Gemell. 30, 189.Google Scholar
Thomson, B. & Illsley, R. (1969) Family growth in Aberdeen. J. biosoc. Sci. 1, 23.CrossRefGoogle Scholar
Wyshak, G. & White, C. (1969) Fertility of twins and parents of twins. Hum. Biol. 41, 66.Google ScholarPubMed