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Teratology. 2002;66 Suppl 1:S3-6.

Contribution of birth defects to infant mortality in the United States.

Author information

  • 1Perinatal Data Center, March of Dimes Birth Defects Foundation, National Office, 1275 Mamaroneck Avenue, White Plains, NY 10605, USA. jpetrini@modimes.org

Abstract

BACKGROUND:

While overall infant mortality rates (IMR) have declined over the past several decades, birth defects have remained the leading cause of infant death in the United States. To illustrate how this leading cause of infant mortality impacts subgroups within the US population a descriptive analysis of the contribution of birth defects to infant mortality at the national and state level was conducted.

METHODS:

Descriptive analyses of birth defects-specific IMRs and proportionate infant mortality due to birth defects were conducted for the US using 1999 mortality data from the National Center for Health Statistics. In 1999, the change to ICD-10 impacted how cause-specific mortality rates were coded. Aggregated 1995-1998 state- birth defects infant death statistics were used for state comparisons.

RESULTS:

In 1999, birth defects accounted for nearly 1 in 5 infant deaths in the US. Variation in birth defects-specific IMRs were observed by maternal race with black infants having the highest rates when compared with other race groups. However, among black infants prematurity/low birthweight was the leading cause of death, followed by birth defects. There is substantial variation in state-specific birth defects IMRs and the state-specific proportion of infant deaths due to birth defects.

CONCLUSIONS:

Birth defects remain the leading cause of infant death in the United States, despite the changes that resulted in 1999 from an update in the coding of cause of death from ICD-9 to ICD-10. While birth defects-specific IMRs provide an overall picture of fatal birth defects and a gauge of the impact of life-threatening anomalies, they represent only a fraction of the impact of birth defects, missing those who survive past infancy and those birth defects related losses in the antepartum period. Expansion and support of effective birth defects monitoring systems in each state that include the full spectrum of perinatal outcomes must be a priority. However, paralleling these efforts, analyses of this leading cause of infant mortality provide critical insight into perinatal health and should continue, with appropriate adjustments for the 1999 classification changes.

Copyright 2002 Wiley-Liss, Inc.

PMID:
12239736
[PubMed - indexed for MEDLINE]
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