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INFERTILITY TREATMENT AND MULTIPLE BIRTH RATES IN BRITAIN 1938-94. A Comment

Published online by Cambridge University Press:  01 January 1998

WILLIAM H. JAMES
WILLIAM H. JAMES
Affiliation:
The Galton Laboratory, University College London, Wolfson House, 4 Stephenson Way, London NW1 2HE
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Abstract

Murphy et al. (1997) showed age-standardised twinning rates for Scotland and England & Wales 1952–94. The rates declined to a value of about 9·2 per 1000 around 1978–81 and subsequently increased to about 11·5 per 1000 in 1992–94. The authors conclude their paper with the words: 'perhaps 15% of twins nationally now follow treatment and the natural twinning rate might still be in decline'.

Type
DEBATE
Information
Journal of Biosocial Science , Volume 30 , Issue 1 , January 1998 , pp. 127 - 133
Copyright
© 1998 Cambridge University Press

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