Health Indicator Report of Sex Ratio at Birth
The expected sex ratio at birth (male to female) is 105 boys born for every 100 girls. Studies have reported changes in the ratio of males to females at birth and some scientists have suggested that environmental hazards can affect how many males are born. Parents and the fetus can be exposed to different hazards referred to as endocrine disruptors. Fewer males are conceived when exposure to endocrine disruptors causes a decrease in testosterone.
Data SourceBirth Certificate Database, Office of Vital Statistics and Registry, New Jersey Department of Health
DefinitionThe number of full term singleton males born divided by the number of full term singleton females born
NumeratorNumber of full term singleton males born to residents in a time period
DenominatorNumber of full term singleton females born to residents in a time period
How Are We Doing?The sex ratio at birth among full term (> 37 weeks gestational age) singletons (not twins, triplets, etc.) in New Jersey has been stable, fluctuating slightly from year to year between 1.027 and 1.054.
Page Content Updated On 03/24/2017, Published on 05/08/2017