Down Syndrome Revisited

Down Syndrome has been in the news a lot in recent weeks. The Washington Post reported on First Trimester Screening for Down Syndrome in November and many other reporters have followed suit. My thoughts on Fetal Testing for Down Syndrome looked at the true impact of testing outcomes and Red State Moron had this to say. Now a new report is out through AP, this one at ABC News that has found Down Syndrome more common (emphasis mine):

Down syndrome in the United States is more common than previously thought,
at one case for every 733 live births, according to a new
government report containing what are regarded as the most reliable estimates
yet on the prevalence of 18 types of birth defects.

Previously, Down syndrome, a type of retardation caused by a genetic
mutation, was estimated to occur in a range of one in every 800 live births to
one in every 1,000.

I am absolutely stunned that if 85% of pregnancies are terminated (Red State Moron and I found two studies citing this) after only a positive Down Syndrome screening, then the statistics of 1:733 is way off and indeed Down Syndrome is much more common than the report leads us to believe.