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Complete Health Indicator Report of Birth Defects: Prevalence of Lower Limb Deficiencies per 10,000 Live Births

Definition

A lower limb deficiency occurs when a part of or the entire leg (lower limb) of a fetus fails to form completely during pregnancy. The limb is reduced from its normal size or is missing. Prevalence of lower limb deficiencies is the number of live-born infants with a lower limb deficiency per 10,000 live-born infants. (Live-born infants are the infants born with any evidence of life).

Numerator

Number of live-born infants with a lower limb deficiency.

Denominator

Number of live-born infants.

Data Interpretation Issues

In January 2000, birth defects became a reportable condition in New Mexico; however, birth defects were collected prior to this date. The first year of consistent data is 1998. However, data for lower limb deficiencies were not collected consistently until 2004. For lower limb deficiency data, the most recent year of analyzed data is 2011. Data are collected on live births occurring in-state to NM residents. Therefore, live births that occur in NM among out-of-state residents are excluded. Case finding/identification occurs through review of birth and death certificates, hospital discharge diagnoses, records from pediatric specialists and prenatal diagnostic providers. Birth defect cases are ascertained up to age 4; however, the majority of diagnoses are made by age 1.

Why Is This Important?

Birth defects pose a significant public health problem. One in 33 babies is born with a structural birth defect in the United States. Birth defects are a leading cause of infant mortality and responsible for considerable morbidity with enormous economic and social costs. Babies and children with limb deficiencies will face various issues and difficulties, but the extent of these will depend on the location and size of the deficiency. Some potential difficulties and problems include: -Difficulties with normal development such as motor skills -Needing assistance with daily activities such as self-care -Limitations with certain movements, sports, or activities -Potential emotional and social issues because of physical appearance Specific treatment for limb defects will be determined by the child's doctor, based on things like the child's age, the extent and type of defect, and the child's tolerance for certain medications, procedures, and therapies.

Other Objectives

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

How Do We Compare With the U.S.?

The national prevalence of lower limb deficiencies among births from 2004-2006 is per 1.68 per 10,000 births. These data come from 14 birth defects surveillance programs: Arkansas, Arizona, California [8-county Central Valley], Colorado, Georgia [5-county metropolitan Atlanta], Illinois, Iowa, Kentucky, Massachusetts, North Carolina, Oklahoma, Puerto Rico, Texas, and Utah. For more information, please see: http://www.cdc.gov/ncbddd/features/birthdefects-keyfindings.html Due to variability in the methods used by state birth defects surveillance systems and differences in populations and risk factors, state prevalence estimates may not be directly comparable with national estimates or those of other states.


Graphical Data Views

Lower Limb Deficiencies - Five Year Average Prevalence per 10,000 Live Births 2006-2011

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NM vs. U.S.YearPrevalence per 10,000 Live BirthsLower LimitUpper Limit
Record Count: 2
New Mexico2006-20101.60.92.2
New Mexico2007-20111.712.4

Data Notes

New Mexico live-born infants with lower limb deficiencies, 2006-2011. The following International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) codes were used to identify lower limb deficiences: 755.30-755.39. In 1987, CDC put forth a set of 6 digit codes (the sixth digit provides greater specificity for diagnosis) based on the British Pediatric Association Classification of Diseases and the ICD-9-CM. If CDC/BPA codes are present, the following were used to identify lower limb deficiences: 755.300 - 755.390.


Prevalence of Lower Limb Deficiences by County 2006-2011

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confidence limits

CountyPrevalence per 10,000 Live BirthsLower LimitUpper LimitNoteNumer- atorDenom- inator
Record Count: 35
Bernalillo1.50.42.5Rate is statistically unstable.854,812
Catron000Rate is statistically unstable.0117
Chaves4.9010.5Rate is statistically unstable.36,092
Cibola3.9011.6Rate is statistically unstable.12,551
Colfax000Rate is statistically unstable.0832
Curry206Rate is statistically unstable.14,978
De Baca000Rate is statistically unstable.0131
Dona Ana1.303Rate is statistically unstable.215,759
Eddy000Rate is statistically unstable.04,519
Grant4.6013.7Rate is statistically unstable.12,165
Guadalupe000Rate is statistically unstable.0260
Harding000Rate is statistically unstable.027
Hidalgo000Rate is statistically unstable.0355
Lea1.604.6Rate is statistically unstable.16,428
Lincoln000Rate is statistically unstable.01,281
Los Alamos000Rate is statistically unstable.01,041
Luna000Rate is statistically unstable.02,319
McKinley000Rate is statistically unstable.07,637
Mora000Rate is statistically unstable.0266
Otero000Rate is statistically unstable.05,129
Quay16.4048.5Rate is statistically unstable.1610
Rio Arriba5.2012.5Rate is statistically unstable.23,806
Roosevelt000Rate is statistically unstable.01,748
Sandoval3.206.8Rate is statistically unstable.39,366
San Juan0.902.6Rate is statistically unstable.111,435
San Miguel4.8014.1Rate is statistically unstable.12,095
Santa Fe103.1Rate is statistically unstable.19,552
Sierra000Rate is statistically unstable.0591
Socorro000Rate is statistically unstable.01,512
Taos000Rate is statistically unstable.02,110
Torrance000Rate is statistically unstable.01,060
Union000Rate is statistically unstable.0181
Valencia00005,871
Missing/unknown000Rate is statistically unstable.02
NM1.612.226166,638

Data Notes

New Mexico live-born infants with lower limb deficiencies, 2006-2011. The following International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) codes were used to identify lower limb deficiences: 755.30-755.39. In 1987, CDC put forth a set of 6 digit codes (the sixth digit provides greater specificity for diagnosis) based on the British Pediatric Association Classification of Diseases and the ICD-9-CM. If CDC/BPA codes are present, the following were used to identify lower limb deficiences: 755.300 - 755.390.


Lower Limb Deficiencies:Five Year Counts - Moving 5-Year Totals 2006-2011

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YearCase Counts
Record Count: 2
2006-201022
2007-201123

Data Notes

New Mexico live-born infants with lower limb deficiencies, 2006-2011. The following International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) codes were used to identify lower limb deficiences: 755.30-755.39. In 1987, CDC put forth a set of 6 digit codes (the sixth digit provides greater specificity for diagnosis) based on the British Pediatric Association Classification of Diseases and the ICD-9-CM. If CDC/BPA codes are present, the following were used to identify lower limb deficiences: 755.300 - 755.390.

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 07/31/2014, Published on 07/31/2014
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Content updated: Tue, 12 Aug 2014 11:49:04 MDT