Rate of Chromosomal Birth Defect Cases By County Per 10,000 Live Births in Tennessee (2008 – 2012)


In recognition of National Birth Defects Prevention month check out this map of Tennessee which shows the rate of chromosomal birth defects by county per 10,000 live births by county for the state of Tennessee for the years 2008 to 2012. From the map we can see counties such as, Williamson, Johnson, Scott and Giles had a higher rate of chromosomal birth defects, ranging from 27.01 to 36.00 per 10,00 live births. Given a mothers age is a significant risk factor for certain types of chromosomal birth defects with older mothers having a higher risk it would be interesting to compare the age demographics of these counties.

By Julia Watson