Jackofknives
Ipwnpoker.com
Topics: 91
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A new blood test to detect prostate cancer was given to 1000 male members of a large HMO. Although 50 of the men actually had prostate cancer, the test was positive in only 15; the other 35 pts with prostate cancer had negative tests. Of the 950 men without prostate cancer, the test was positive in 200 men and negative in 750. if the cutoff value indicating a positive test is lowered from 4 ng/ml to 3 ng/ml, this change would
Increase negative predictive value
Decrease sensitivity
Increase false negative rate
Increase positive predictive value
Increase specificity
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| robin082006
Forum Hero
Topics: 471
Posts: 5,125
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Increase negative predictive value
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| DRSVANITHA
Forum Newbie
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increase in postive predictive value
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| new_n_lost
Politically InCorrect
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Increase positive predictive value ???
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| robin082006
Forum Hero
Topics: 471
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lower cut-off--->increase sensitivity--> increase NEGATIVE PREDICTIVE VALUE and decrease POSITIVE predictive value.
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| po
Forum Elite
Topics: 39
Posts: 356
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had lot of trouble understanding,but now its clear thanks robin082006 
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