Question
A non-invasive pregnancy screening test for Trisomy 21 (Down's Syndrome) that uses cell-free DNA from the mother's blood has a sensitivity of 100% and a
A non-invasive pregnancy screening test for Trisomy 21 (Down's Syndrome) that uses cell-free DNA from the mother's blood has a sensitivity of 100% and a specificity of 99.9%. What is the positive predictive value of the test if the prevalence of Trisomy 21 in the screened population is 20 per 10,000? Enter as a whole number and do not include the percent sign.
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Reading, Writing, And Proving A Closer Look At Mathematics
Authors: Ulrich Daepp, Pamela Gorkin
2nd Edition
1441994793, 9781441994790
