Article
A mixture model of nuchal translucency thickness in screening for chromosomal defects
28 Mar 2008
Abstract excerpt
OBJECTIVE: Fetal nuchal translucency (NT) thickness increases with crown-rump length (CRL). In screening for chromosomal defects patient-specific risks are derived by multiplying the a priori maternal age-related risk by a likelihood ratio, determined from the deviation of the measured NT from the expected median. To quantify this deviation the measured NT is either subtracted (delta NT) or divided by the...
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