Effect of semen quality on human sex ratio in in vitro fertilization and intracytoplasmic sperm injection An analysis of 27158 singleton infants born after fresh single embryo transfer

Friday, April 1, 2016
Lower sperm motility was associated with significant lower sex ratio in in vitro fertilization whereas intracytoplasmic sperm injection was associated with significant lower sex ratio regardless of sperm quality.

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Preconception Stress and the Secondary Sex Ratio A Prospective Cohort Study

Thursday, September 27, 2012
Prospective longitudinal evaluation of preconception stress biomarkers in relation to the secondary sex ratio demonstrated a significant association between preconception cortisol concentration and decreased odds of a male birth.

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