The California Birth Defect Monitoring Registry is a system for recording and tracking birth malformations in selected counties. It is a core function of CBDMP and serves as a substrate to conduct population based surveillance and research for risk prevention factors associated with birth defects. The Registry currently monitors a representative subset of California counties. These counties represent 40% of the state’s births and are representative of the state’s geographic, environmental and racial/ethnic diversity.
The following estimates of annual birth defect counts for all 58 California counties are based on the average number of births (live birth and fetal death) using 2004-2006 CBDMP data for San Diego, Orange, and Central Valley Counties (Fresno, Kern, Kings, Madera, Merced, San Joaquin, Stanislaus, and Tulare.
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