asmi
Forum Hero
Topics: 1043
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trisomy 21 normal karyotype
positive test 100 ; 50
negative test 100 ; 250
the test is administered to a group of 500 women considered to be at risk for a down's fetus .What is the sensitivity of this test ?
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| usmleasr
Forum Guru
Topics: 105
Posts: 970
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if i understand the data given correctly it is 50% 
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| asmi
Forum Hero
Topics: 1043
Posts: 4,609
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i have a request for you usmleasr...try to explain/defend your answer too.
Thanks
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| usmleasr
Forum Guru
Topics: 105
Posts: 970
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hi asmi..
the problem with me is i type slowly..so i hardly type explanations...also ..when i see a question where the discussion is not started(freshq)..i type only ans..sure i will try to put explanations here after....
here ,
100 true +
100 false -
sensitivity = TP/TP+FN
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| asmi
Forum Hero
Topics: 1043
Posts: 4,609
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thanks....
And as always you are correct
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