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In tests for pironoma, a serious disease, a false positive [#permalink]
 20 Jan 2010, 08:25
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33% (01:44) correct
66% (00:57) wrong based on 1 sessions
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. try this but give your logic to support your answer
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Re: In tests for pironoma, a serious disease [#permalink]
20 Jan 2010, 09:06
SudiptoGmat wrote: 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.
try this but give your logic to support your answer Choosing Option E here. Reasoning : am assuming each lab tests consists of false postive results,accurate results and false negative results. Providing treatment to a person not afflicted by the disease ( a false positive) may have serious side effects ,while in the other 2 cases- false negative and accurate,the treatment works in the person's favour. So ,if all lab tests have the same proportion of false -ve results,it make sense to use the laboratory test that has the lowest proportion of false positive results for minimising the risk of any adverse side effects ,while maximising treatment benefit to the rest of the population.
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Re: In tests for pironoma, a serious disease [#permalink]
20 Jan 2010, 11:31
OA is . I wanted to know what others think about the question. Thanks for explanation. I am in sync with you.
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Re: In tests for pironoma, a serious disease [#permalink]
15 Aug 2010, 19:22
marking E by POE
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Re: In tests for pironoma, a serious disease [#permalink]
15 Aug 2010, 23:25
+1 for E. E says False negative results are the same in all the labs and hence it is the false positive results that would determine which lab to use!!
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Re: In tests for pironoma, a serious disease [#permalink]
16 Aug 2010, 00:27
E it is
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Re: In tests for pironoma, a serious disease [#permalink]
17 Aug 2010, 23:52
E
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Re: In tests for pironoma, a serious disease [#permalink]
18 Aug 2010, 00:14
Ya, I went for C via pre-phrasing  , and coud'nt concentrate on E. E should be the correct one 
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Re: In tests for pironoma, a serious disease [#permalink]
09 Sep 2010, 00:52
Tough and confusing 
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Re: In tests for pironoma, a serious disease [#permalink]
09 Sep 2010, 06:59
Why not C?
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Re: In tests for pironoma, a serious disease [#permalink]
11 Sep 2010, 05:57
SudiptoGmat wrote: 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. ==> Keeping it as a contender
(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. ==> Weakens the argument since the test results have the same minor side effects as other tests and so there is no good reason to specifically use lab test that has the lowest proportion of false positive results.
(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. ==> No effect on the argument
(D) The proportion of inconclusive test results is equal for all laboratory tests used to detect pironoma. ==> No effect on the argument
(E) All laboratory tests to detect pironoma have the same proportion of false negative results. ==> Contender
try this but give your logic to support your answer Out of A and E, E definitely supports the argument better than A does.
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Re: In tests for pironoma, a serious disease
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11 Sep 2010, 05:57
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