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# In tests for pironoma, a serious disease, a false positive

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Manager
Joined: 29 Sep 2006
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In tests for pironoma, a serious disease, a false positive [#permalink]

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11 Oct 2006, 08:20
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In tests for pironoma, a serious disease, a false positive result indicates that people have pironoma when, in fact, they do not; a false negative result indicates that people do not have pironoma when, in fact, they do. To detect pironoma most accurately, physicians should use the laboratory test that has the lowest proportion of false positive results.
Which of the following, if true, gives the most support to the recommendation above?
(A) The accepted treatment for pironoma does not have damaging side effects.
(B) The laboratory test that has the lowest proportion of false positive results causes the same minor side effects as do the other laboratory tests used to detect pironoma.
(C) In treating pironoma patients, it is essential to begin treatment as early as possible, since even a week of delay can result in loss of life.
(D) The proportion of inconclusive test results is equal for all laboratory tests used to detect pironoma.
(E) All laboratory tests to detect pironoma have the same proportion of false negative results.

I got the answer correct but dont have a clear explanaition for my answer Can someone plese explain..

OA later

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Current Student
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11 Oct 2006, 08:58
(E) tightens the spread.

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Manager
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11 Oct 2006, 10:44
Yes (E) it is. Recommendation assumes that "laboratory test that has the lowest proportion of false positive results." But what about the "proportion of false negative results" Because if this proportion was more than this recommendation was not advisable.Hence info. on this is required,which is provided by (E)

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VP
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11 Oct 2006, 19:09
E 2.

it basically means, that when false negative rates are the same, you choose the lowest false positive.

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11 Oct 2006, 19:11
one more vote for E.

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VP
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11 Oct 2006, 19:17
I too would go with E. A is misleading.
_________________

The path is long, but self-surrender makes it short;
the way is difficult, but perfect trust makes it easy.

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11 Oct 2006, 19:25
A - irrelevant.
B - ok.Keep
C - Irrelevant
D - Irrelevant
E - Correct. If All laboratory tests to detect pironoma have the same proportion of false negative results, the test with the lowest proportion of false positive results is the most accurate.

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11 Oct 2006, 19:25
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# In tests for pironoma, a serious disease, a false positive

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