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- Title
Couples with exclusively female offspring have an increased probability of a male child after using male sex preselection.
- Authors
Ericsson, S.A.; Ericsson, R.J.
- Abstract
The present study was undertaken to determine whether couples with one or more daughters and no sons had an increased probability of having a male child after using male sex preselection. The sex ratio of children born to couples after using ‘protocol 3’ (n = 70) or ‘modified protocol 3’ (n = 28) male sex preselection at one of 14 centres was determined. The normal approximation to the binomial distribution was used to determine significant differences between these sex ratios and the established sex ratio for children born to couples with one previous daughter and no sons. The sex ratios of both protocol 3 sex-preselected children (73.0%; P < 0.0001) and modified protocol 3 sex-preselected children (86%; P < 0.0001) were significantly different to the established sex ratio (control) for a current child born to parents with one previous daughter and no sons (50.1%). Couples with one or more daughters and no sons will have an increased probability of a male child after using male sex preselection. Key words: sex ratio/sex preselection
- Publication
Human Reproduction, 1992, Vol 7, Issue 3, p372
- ISSN
0268-1161
- Publication type
journal article