Skip directly to searchSkip directly to the site navigationSkip directly to this page's context menuSkip directly to the page's main content

Complete Indicator Profile of Birth Outcomes: Sex Ratio at Birth

Definition

The ratio of total males/total females born in a geographic area at a certain time.

Numerator

The total number of full-term, singleton male infants born in a specified geographic area during and time period.

Denominator

The total number of full-term, singleton female infants born in a specified geographic area during and time period.

Why Is This Important?

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. Although the mechanism which determines the sex of the infant is not completely understood, some, but not all, have suggested that environmental hazards can affect how many males are born. Biological parent(s) and/or the fetus can come in contact with and become exposed to different hazards referred to as endocrine disruptors. Fewer males are conceived when exposure to endocrine disruptors results in a decrease in testosterone. Because states have accurate Vital Statistics (VS) records on the sex of live births, changes over time in the sex ratio of infants can be measured as the ratio of males to females.

Other Objectives

CDC Environmental Public Health Tracking, Nationally Consistent Data and Measures (EPHT NCDM)



Graphical Data Views

Male to Female Sex Ratio at Birth (Term Singletons Only) by County, New Mexico 2010-2012

::chart - missing::
confidence limits

County Lower Limit Upper Limit Note Numer- ator Denom- inator
Record Count: 34
Bernalillo 103.5 100.9 106.2 11,168 10,787
Catron 110.7 59.6 161.8 31 28
Chaves 99.8 92 107.7 1,240 1,242
Cibola 101 88.8 113.1 527 522
Colfax 104.9 83.5 126.3 172 164
Curry 104.9 96.9 112.9 1,226 1,169
De Baca 75 18.4 131.6 Warning, small numbers, statistic not stable 21 28
Dona Ana 102.7 98.5 107 4,308 4,194
Eddy 101.3 92.6 110 1,013 1,000
Grant 103.1 89.7 116.4 436 423
Guadalupe 83.9 47 120.7 52 62
Harding 87.5 0 188.9 Warning, small numbers, statistic not stable 7 8
Hidalgo 76.7 44.7 108.8 66 86
Lea 105.2 97.8 112.7 1,405 1,335
Lincoln 93.1 75.6 110.6 243 261
Los Alamos 108.2 89.8 126.6 237 219
Luna 104.5 92.1 116.9 513 491
McKinley 99.1 92.2 106 1,611 1,626
Mora 105.2 69.2 141.1 61 58
Otero 98.3 90.2 106.4 1,163 1,183
Quay 79.5 56.3 102.7 128 161
Rio Arriba 94.4 84.4 104.4 743 787
Roosevelt 105.8 91.4 120.2 382 361
Sandoval 102 95.7 108.2 1,986 1,948
San Juan 99.6 94 105.1 2,476 2,487
San Miguel 102.5 89.4 115.5 456 445
Santa Fe 101.8 95.4 108.2 1,894 1,860
Sierra 98.3 72.6 124 115 117
Socorro 103 87.1 118.9 308 299
Taos 106.8 93.4 120.3 437 409
Torrance 119 99.9 138 232 195
Union 121.3 87.4 155.2 74 61
Valencia 106.8 98.7 114.9 1,213 1,136
NM 102.3 100.8 103.7 35,946 35,153


Male to Female Sex Ratio at Birth (Term Singletons Only) by Year, New Mexico 1990-2012

::chart - missing::
confidence limits

NM vs. U.S. Year Males per 100 Females Lower Limit Upper Limit Numer- ator Denom- inator
Record Count: 23
New Mexico 1990 101.9 99.4 104.4 12,311 12,078
New Mexico 1991 101.3 98.8 103.8 12,639 12,479
New Mexico 1992 101.7 99.2 104.1 12,613 12,408
New Mexico 1993 102.4 99.9 104.9 12,632 12,338
New Mexico 1994 102.8 100.3 105.3 12,527 12,182
New Mexico 1995 101.8 99.2 104.3 12,154 11,944
New Mexico 1996 101.2 98.7 103.7 12,230 12,085
New Mexico 1997 103 100.4 105.5 12,200 11,850
New Mexico 1998 101.7 99.2 104.2 12,231 12,025
New Mexico 1999 102.3 99.8 104.8 12,187 11,914
New Mexico 2000 102.3 99.7 104.8 12,084 11,818
New Mexico 2001 101.7 99.1 104.2 12,093 11,895
New Mexico 2002 100 97.5 102.5 12,264 12,265
New Mexico 2003 101 98.5 103.5 12,365 12,239
New Mexico 2004 103.6 101.1 106 12,679 12,244
New Mexico 2005 101.5 99 104 12,704 12,514
New Mexico 2006 103.1 100.7 105.6 13,303 12,900
New Mexico 2007 103.6 101.2 105.9 13,707 13,237
New Mexico 2008 101.3 98.8 103.7 13,094 12,928
New Mexico 2009 102.9 100.5 105.4 12,710 12,347
New Mexico 2010 104.4 101.9 107 12,272 11,752
New Mexico 2011 99.1 96.6 101.7 11,750 11,856
New Mexico 2012 103.3 100.7 105.8 11,924 11,545

Data Source

Birth Certificate Data, Bureau of Vital Records and Health Statistics (BVRHS), New Mexico Department of Health.


More Resources and Links

Evidence-based community health improvement ideas and interventions may be found at the following sites:

Additional indicator data by state and county may be found on these Websites:

Medical literature can be queried at the PubMed website.

For an on-line medical dictionary, click on this Dictionary link.

Page Content Updated On 03/12/2014, Published on 03/13/2014
The information provided above is from the New Mexico Department of Health's NM-IBIS web site (http://ibis.health.state.nm.us). The information published on this website may be reproduced without permission. Please use the following citation: "Retrieved Wed, 23 April 2014 from New Mexico Department of Health, Indicator-Based Information System for Public Health Web site: http://ibis.health.state.nm.us".

Content updated: Thu, 13 Mar 2014 08:34:56 MDT