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California Birth defects monitoring Program

Data Sheets 

Below are links to data sheets featuring the latest statistics on the occurrence of select birth defects in California. Findings presented in these data sheets come from CBDMP surveillance data. The Program gathers medical information on all babies born with serious birth defects in a subset of California's population. We report current rates and occurrence patterns based on this registry data. Birth defects are medical problems of structure and function, which are present at birth. They may affect how the body looks, works, or both. Birth defects vary greatly depending on which organ or body part is involved and how much it is affected. The causes of most birth defects are unknown. Some have a possible genetic origin while others have been shown to be related to certain environmental exposures. Birth defects included in the registry are medical problems of structure, function or genetic origin. The data sheets included below represent a selection of these major structural birth defects and genetic conditions. A Summary Birth Defects Prevalence Table, featuring all 14 conditions, is also available. For more information on the data represented please review the California Birth Defects Registry Data: Technical Notes (PDF).

Anophthalmia and Microphthalmia

Anotia and Microtia

 Cleft Lip and Cleft Palate


Esophageal Atresia and Tracheoesophageal Fistula


Heart Defects


Limb Deficiencies



Trisomy 13

Trisomy 18

Trisomy 21

Summary Birth Defects Prevalence Table (PDF)


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