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Indicator Report - Sex Ratio at Birth

Why Is This Important?

The expected sex ratio at birth (male to female) is 1.05, or 5% more males born than females. Population growth is, in part, related to the number of live male children. Numerous studies have reported changes in the ratio of males to females at birth; many of the studies have found a reduction in male relative to female births in different countries throughout the world.

Sex Ratio at Birth by Year, 1989-2006

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Data Sources

Office of Vital Records and Statistics, Utah Department of Health.

Definition

The sex ratio at birth is the ratio (comparison) of male to female births. The expected sex ratio at birth (male to female) is 1.05, or 5% more males born than females.

How We Calculated the Rates

Numerator: Number of live male births in a specific period of time; number of live female births in a specific period of time.
Denominator: Total number of live births in a specific period of time.

Page Content Updated On 10/06/2008, Published on 10/30/2008
The information provided above is from the Utah Department of Health's Center for Health Data IBIS-PH web site (http://ibis.health.utah.gov). The information published on this website may be reproduced without permission. Please use the following citation: "Retrieved Wed, 22 October 2014 15:39:07 from Utah Department of Health, Center for Health Data, Indicator-Based Information System for Public Health Web site: http://ibis.health.utah.gov".

Content updated: Tue, 19 Nov 2013 23:09:24 MST