The proportion of male live births may fall with stress. This paper fails to find evidence of stress using the gender ratio at birth in Israel, when the country is studied by race or religion.
ABSTRACT
Objective: Male live births occur in excess of female live births and their ratio (M/F) is usually expressed as male divided by total births. The value of M/F varies, declining with stress. Israel has been shown to have a relatively stable M/F. This study was carried out in order to ascertain whether there were any racial or religious differences in M/F in Israel, and to compare with totals for Europe and North America.
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