|
Author |
Message |
|
TAGS:
|
|
|
Manager
Joined: 04 Jan 2011
Posts: 73
Followers: 1
Kudos [?]:
1
[0], given: 4
|
In tests for pironoma, a serious disease, a false positive [#permalink]
 13 Mar 2011, 19:53
Question Stats:
57% (02:06) correct
42% (01:08) wrong based on 7 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.
|
|
|
|
|
|
|
Director
Status: Admitted
Affiliations: Chicago Booth
Joined: 03 Feb 2011
Posts: 947
Followers: 10
Kudos [?]:
143
[0], given: 123
|
Re: lab test to detect pironoma, a serious disease [#permalink]
13 Mar 2011, 20:37
To make the argument predictable, when one thing varies the other variable should be constant. This is simple quant which makes E as the answer. fanatico 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.
|
|
|
|
|
|
Senior Manager
Joined: 09 Feb 2011
Posts: 286
Concentration: General Management, Social Entrepreneurship
GMAT 1: 770 Q50 V47
Followers: 5
Kudos [?]:
88
[0], given: 10
|
Re: lab test to detect pironoma, a serious disease [#permalink]
13 Mar 2011, 21:08
A will be option if the recomm was to use the test with least proportion of false negative
B discusses side effects of various tests- irrelevant
C mentions timings- but no mention is in question of timelines of the tese.
D talks of all incolclusive tests- not only the false positive ones
E says all other things being equal ( all tests having the same proportion of false negative results) which should be used- obviously, the one wth least false positive.
|
|
|
|
|
|
Verbal GMAT Forum Moderator
Joined: 31 Jan 2010
Posts: 500
WE 1: 4 years Tech
Followers: 7
Kudos [?]:
67
[0], given: 149
|
Re: lab test to detect pironoma, a serious disease [#permalink]
14 Mar 2011, 01:13
fanatico 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. The gist of the matter is that people should not be unduly scared about having contracted pironoma disease.The impression is that people should not be led to believe that they dont have pironoma when in fact they do. This can be explained by the fact that a false negative is not a problem but a false positive is. One feasible explanation is that all tests have the same false negative where as the false positive is a parameter that can be considered A : Mildly Strengthens but not in context B : Irrelevant C:Weakens D:Weakens E :Strengthens
_________________
My Post Invites Discussions not answers
Try to give back something to the Forum.I want your explanations, right now !
Please let me know your opinion about the Chandigarh Gmat Centrehttp://gmatclub.com/forum/gmat-experience-at-chandigarh-india-centre-111830.html
|
|
|
|
|
|
Senior Manager
Joined: 03 Aug 2012
Posts: 323
Concentration: General Management, General Management
GMAT 1: 630 Q47 V29
GPA: 3.7
Followers: 2
Kudos [?]:
11
[0], given: 68
|
Re: In tests for pironoma, a serious disease, a false positive [#permalink]
19 May 2013, 06:20
False +ve => Detected when they don't have False -ve => Not Detected when they have False -ve is disastrous without any assumptions.Because if a person has a disease and it goes undetected it is disastrous.Furthermore, had it been mentioned that due to false +ve patients will be diagnosed and there will be side effects of the diagnosis then False +ve would have been most important. However, here in this case when False -ve has not been given importance in the stimulus and False +ve is given important criterion. Then recommendation for laboratory tests falls on the more number of False -ve detected.So (E) implies that proportion is constant thereby is the best answer choice ! Rgds, TGC !!
_________________
Plz Correct me if I am deviating somewhere!!
Consider KUDOS if the post was informative!!
|
|
|
|
|
|
|
Re: In tests for pironoma, a serious disease, a false positive
[#permalink]
19 May 2013, 06:20
|
|
|
|
|
|
|
|
|
Similar topics |
Author |
Replies |
Last post |
|
Similar
Topics:
|
 |
|
|
In tests for pironoma, a serious disease, a false positive
|
Vicky |
7 |
29 Sep 2003, 03:50 |
|
|
|
|
In tests for pironoma, a serious disease, a false positive
|
ayushi |
6 |
11 Oct 2006, 09:20 |
|
|
|
|
In tests for pironoma, a serious disease, a false positive
|
albertrahul |
0 |
14 Jul 2008, 21:48 |
 |
9
|
|
In tests for pironoma, a serious disease, a false positive
|
rohansherry |
12 |
22 Aug 2009, 07:35 |
|
|
1
|
|
In tests for pironoma, a serious disease, a false positive
|
whichscore |
4 |
14 Apr 2011, 23:36 |
|
|
|
|
|
Moderators:
metallicafan, rajeevrks27, souvik101990, PTK, MacFauz, noboru, kissthegmat, carcass, willigetmylifeback, mikemcgarry, doe007, Vercules, Legendaddy, tuanquang269, RaviChandra, Marcab, Narenn
|
close
