Abstract
Determining sex of offspring by timing of intercourse has been a subject of intense interest for the lay public and professional community. This metaanalysis of couples practicing natural family planning provides an opportunity to evaluate sex ratios in relation to the timing of conception with several parameters, including basal body temperature shift and peak mucus as markers of ovulation. Data from six studies show a statistically significant lower proportion of male births among conceptions that occur during the most fertile time of the cycle.
Original language | English (US) |
---|---|
Pages (from-to) | 1982-1984 |
Number of pages | 3 |
Journal | American journal of obstetrics and gynecology |
Volume | 165 |
Issue number | 6 |
DOIs | |
State | Published - 1991 |
Externally published | Yes |
Keywords
- Natural family planning
- X-bearing sperm
- Y-bearing sperm
- sex selection
ASJC Scopus subject areas
- Obstetrics and Gynecology