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08 July 2010

Summary of request

The HFEA was asked for data concerning gender outcomes following single embryo transfer (either at cleavage or blastocyst stages). The Authority was also asked for data concerning monozygotic twinning rates following single embryo transfer (either at cleavage or blastocyst stages) resulting in twins or double embryo transfer resulting in triplets.

 

HFEA response

Relevant data may be accessed below as a PDF document. This covers the period January 1998 to June 2008. Frozen embryo transfer data is not included.

• SET gender outcomes and monozygotic twinning rates (16.2 KB)

Page last updated: 09 August 2012

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