Updated national birth prevalence estimates for selected birth defects in the United States, 2004–2006

The National Birth Defects Prevention Network collects state-specific birth defects surveillance data for annual publication of prevalence estimates and collaborative research projects. In 2006, data for 21 birth defects from 1999 through 2001 were presented as national birth prevalence estimates. The purpose of this report was to update these estimates using data from 2004 through 2006.Population-based data from 11 active case-finding programs,...