Selected birth defects data from population-based birth defects surveillance programs in the United States, 2006 to 2010: featuring trisomy conditions.

The annual National Birth Defects Prevention Network (NBDPN) Congenital Malformations Surveillance Report includes state-level data on major birth defects (i.e., conditions present at birth that cause adverse structural changes in one or more parts of the body) and a directory of population-based birth defects surveillance systems in the United States. Beginning in 2012, these annually updated data and directory information are available in an electronic format accompanied by a data brief. This year’s report includes data from 41 population-based birth defects surveillance programs and a data brief highlighting the more common trisomy conditions (i.e., disorders characterized by an additional chromosome): trisomy 21 (commonly referred to as Down syndrome), trisomy 18, and trisomy 13. State-Specific Data Collection and Presentation for Selected Birth Defects Data collection The NBDPN Data Committee, in collaboration with the Centers for Disease Control and Prevention (CDC), invited population-based birth defects surveillance programs in the United States to submit data on major birth defects affecting central nervous, eye, ear, cardiovascular, orofacial, gastrointestinal, genitourinary, and musculoskeletal systems, as well as trisomies, amniotic bands, and fetal alcohol syndrome. Table 1 lists these 47 conditions and their diagnostic codes (International Classification of Diseases, 9th Revision, Clinical Modification [ICD-9-CM]; and Centers for Disease Control and Prevention/British Pediatric Association Classification of Diseases [CDC/BPA]). Table 1 ICD-9-CM and CDC/BPA Codes for 47 Birth Defects Reported in the NBDPN Annual Report Participating state birth defects programs provided counts of all cases of the birth defects listed in Table 1 as well as counts of live births and male live births in their catchment areas for births occurring from January 1, 2006 through December 31, 2010. The cases for all defects were reported by maternal census race/ethnic categories: White non-Hispanic, Black/African-American non-Hispanic, Hispanic, Asian/Pacific Islander non-Hispanic, American Indian/Alaska Native non-Hispanic. Additionally, trisomy cases were provided by six categories of maternal age at delivery: less than 20 years, 20 to 24 years, 25 to 29 years, 30 to 34 years, 35 to 39 years, and 40+ years.

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