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Which of the following most logically completes the passage?

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Senior Manager
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Which of the following most logically completes the passage? [#permalink] New post 11 May 2012, 12:35
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Difficulty:

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Question Stats:

47% (03:11) correct 53% (02:27) wrong based on 206 sessions
Which of the following most logically completes the passage?

Appendicitis (inflammation of the appendix) is potentially fatal; consequently, patients with
symptoms strongly suggesting appendicitis almost have their appendix removed. The
appropriate surgery is low-risk but performed unnecessarily in about 20 percent of all cases. A
newly developed internal scan for appendicitis is highly accurate, producing two
misdiagnoses for every 98 correct diagnoses. Clearly, using this test, doctors can largely avoid
unnecessary removals of the appendix without, however, performing any fewer necessary
ones than before, since .

A. the patients who are correctly diagnosed with this test as not having appendicitis
invariably have medical conditions that are much less serious than appendicitis

B. the misdiagnoses produced by this test are always instances of attributing appendicitis
to someone who does not, in fact, have it

C. all of the patients who are diagnosed with this test as having appendicitis do, in fact,
have appendicitis

D. every patient who is diagnosed with this test as having appendicitis has more than one
of the symptoms generally associated with appendicitis

E. the only patients who are misdiagnosed using this test are patients who lack one or
more of the symptoms that are generally associated with appendicitis
[Reveal] Spoiler: OA
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Re: GWD #21 V4 [#permalink] New post 11 May 2012, 13:00
It is a really tough question.

I initially picked C but after reading other people's opinions, realized that the correct answer must be B.
My understanding is like this. Feel free to point out any flaws.

Before a newly developed internal scan, the surgery was performed unneccessarily in about 20 percent.
(We can say from this statement that of the patients who underwent this surgery, 20 percents didn't actually have Appendictis. I can assume that those unneccessary surgery were caused by misdiagnoses.)

The newly developed internal scan lowered the chance of misdiagnoses.

This newly developed internal scan enables doctors to avoid unnecessary surgery but doesn't lower the number od incidents that patients who need the surgery don't get the surgery.

As people say, misdisgnoses have two cases. 1. actually have one but diagnoed as not having
2. actually don't have one but diagnosed as having.

In the case 1, patients need the surgery but don't get it.
In the case 2, patients don't need the surgery but get it.

If misdiagnoses with the newly developed internal scan is only case 2, unneccessary surgery can be reduced because the number of misdiagonoses is decreased while neccessary sugery is not decreased.
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Location: India
Concentration: Technology, General Management
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Re: GWD #21 V4 [#permalink] New post 16 May 2012, 00:44
it should be B, but pls provide the complete question
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Re: Which of the following most logically completes the passage? [#permalink] New post 30 Aug 2014, 07:42
eybrj2 wrote:
Which of the following most logically completes the passage?

Appendicitis (inflammation of the appendix) is potentially fatal; consequently, patients with
symptoms strongly suggesting appendicitis almost have their appendix removed. The
appropriate surgery is low-risk but performed unnecessarily in about 20 percent of all cases. A
newly developed internal scan for appendicitis is highly accurate, producing two
misdiagnoses for every 98 correct diagnoses. Clearly, using this test, doctors can largely avoid
unnecessary removals of the appendix without, however, performing any fewer necessary
ones than before, since .

A. the patients who are correctly diagnosed with this test as not having appendicitis
invariably have medical conditions that are much less serious than appendicitis

B. the misdiagnoses produced by this test are always instances of attributing appendicitis
to someone who does not, in fact, have it

C. all of the patients who are diagnosed with this test as having appendicitis do, in fact,
have appendicitis

D. every patient who is diagnosed with this test as having appendicitis has more than one
of the symptoms generally associated with appendicitis

E. the only patients who are misdiagnosed using this test are patients who lack one or
more of the symptoms that are generally associated with appendicitis




I was barely able to answer the question . I could not understand the last sentence correctly.

Clearly, using this test, doctors can largely avoid
unnecessary removals of the appendix without, however, performing any fewer necessary
ones than before, since .

Can anyone explain , with examples, how this sentence is structured , especially with the key word however in between .
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Which of the following most logically completes the passage? [#permalink] New post 15 Sep 2014, 09:55
dransa wrote:
eybrj2 wrote:
Which of the following most logically completes the passage?

Appendicitis (inflammation of the appendix) is potentially fatal; consequently, patients with
symptoms strongly suggesting appendicitis almost have their appendix removed. The
appropriate surgery is low-risk but performed unnecessarily in about 20 percent of all cases. A
newly developed internal scan for appendicitis is highly accurate, producing two
misdiagnoses for every 98 correct diagnoses. Clearly, using this test, doctors can largely avoid
unnecessary removals of the appendix without, however, performing any fewer necessary
ones than before, since .

A. the patients who are correctly diagnosed with this test as not having appendicitis
invariably have medical conditions that are much less serious than appendicitis

B. the misdiagnoses produced by this test are always instances of attributing appendicitis
to someone who does not, in fact, have it

C. all of the patients who are diagnosed with this test as having appendicitis do, in fact,
have appendicitis

D. every patient who is diagnosed with this test as having appendicitis has more than one
of the symptoms generally associated with appendicitis

E. the only patients who are misdiagnosed using this test are patients who lack one or
more of the symptoms that are generally associated with appendicitis




I was barely able to answer the question . I could not understand the last sentence correctly.

Clearly, using this test, doctors can largely avoid
unnecessary removals of the appendix without, however, performing any fewer necessary
ones than before, since .

Can anyone explain , with examples, how this sentence is structured , especially with the key word however in between .


My understanding of the last line- With the test, the doctors are now able to avoid unnecessary removals of appendix, but because of the chances of misdiagnoses, the doctors are missing to perform few of the removals even when they are necessary.

Performing any fewer necessary ones than before: Earlier when the test was not available, the doctors were performing removals in almost all the cases, including all the cases where the removals were necessary. However, now with the test, misdiagnoses is in the form of not identifying the need of removal even when it is necessary, thereby performing fewer necessary ones (removals) than before. Hence the answer is (B) : the bold part.

Hope I am able to help you. Any one, please, if my understanding is incorrect, help me understand it!
Which of the following most logically completes the passage?   [#permalink] 15 Sep 2014, 09:55
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