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# Often patients with ankle fractures that are stable, and

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Re: Often patients with ankle fractures that are stable, and [#permalink]

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07 Apr 2013, 22:00
3
KUDOS
Often patients with ankle fractures that are stable, and thus do not
require surgery, are given follow-up x-rays because their orthopedists
are concerned about possibly having misjudged the stability of the fracture.
When a number of follow-up x-rays were reviewed, however, all
the fractures that had initially been judged stable were found to have
healed correctly. Therefore, it is a waste of money to order follow-up
x-rays of ankle fracture initially judged stable.
Which of the following, if true, most strengthens the argument?
A. Doctors who are general practitioners rather than orthopedists are
less likely than orthopedists to judge the stability of an ankle fracture
correctly.
B. Many ankle injuries for which an initial x-ray is ordered are revealed
by the x-ray not to involve any fracture of the ankle.
C. X-rays of patients of many different orthopedists working in several
hospitals were reviewed.
D. The healing of ankle fractures that have been surgically repaired is
always checked by means of a follow-up x-ray.
E. Orthopedists routinely order follow-up x-rays for fractures of bone
other than ankle bones.

A - Additional information irrelevant to the discussion
B - Additional information that strengthens the discussion - keep
C - Additional information that strengthens the discussion (to a lesser extent) - keep
D - Info. out of scope - talking about ankle fractures that are surgically reparied.
E - Not relevant.

Between B and C, I choose B. Wait for your responses. Thanks

GENERAL METHOD:

In CR, Strengthen and Assumption are always considered the most difficult questions. To solve Strengthen question, we should:
- Identify the conclusion - This is what you're trying to strengthen. MOST important.
- Personalize the argument if you can.
- Look for weaknesses in the argument - It seems contradict, but in real GMAT, the answers are always used to eliminate that weakness. Frankly, that's the logic GMAC uses

Avoid Shell game that always support a conclusion that is similar to, but slightly different from the one in the question.

APPLY:

Premise: Often patients with ankle fractures that are stable, --> do not require surgery, are given follow-up x-rays
Premise: When follow-up x-rays were reviewed, however, all the fractures that had initially been judged stable were found to have healed correctly
Conclusion: it is a waste of money to order follow-up x-rays of ankle fracture initially judged stable

What is the weakness: Do the follow-up x-rays that were reviewed by the doctors represent for all follow-up x-rays in general - KEY Point.
Best answer will eliminate that weakness.

A. Doctors who are general practitioners rather than orthopedists are less likely than orthopedists to judge the stability of an ankle fracture correctly. - WRONG - Out of scope.

B. Many ankle injuries for which an initial x-ray is ordered are revealed by the x-ray not to involve any fracture of the ankle. - WRONG - SHELL GAME - Please re-read the conclusion, "it is a waste of money to order follow-up x-rays of ankle fracture initially judged stable". The conclusion is only about the ankle fracture initially judged stable, not all ankle injuries in general. On the other hand, B is TOO GENERAL, It does NOT support a conclusion we need to strengthen.

C. X-rays of patients of many different orthopedists working in several hospitals were reviewed. - CORRECT - Eliminate the weakness perfectly.

D. The healing of ankle fractures that have been surgically repaired is always checked by means of a follow-up x-ray. - WRONG - Out of scope

E. Orthopedists routinely order follow-up x-rays for fractures of bone other than ankle bones. - WRONG - Out of scope.

I hope it could help.

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Re: Often patients with ankle fractures that are stable , and do [#permalink]

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21 Jun 2013, 12:44
ronniebassist wrote:
Often patients with ankle fractures that are stable , and do not require surgery , are given follow up x-rays because their orthopedists are concerned about possibly having misjudged the stability of the fracture . When a number of follow-up x-rays were reviewed,however , all the fractures that had initially been judged stable were found to have healed correctly. Therefore it is a waste of money to order follow-up x-rays of ankle fractures initially judged stable.

Which of the following, if true, most strengthens the argument ?

(A) Doctors who are general practitioners rather than orthopedists are less likely than orthopedists to judge the stability of an ankle fracture correctly.

(B) Many ankle injuries for which an initial x-ray is ordered are revealed by the x-ray not to involve any fracture of the ankle.

(C) X-rays of patients of many different orthopedists working in several hospitals were reviewed.

(D) The healing of ankle fractures that have been surgically repaired is always checked by means of a follow-up x-ray.

(E) Orthopedists routinely order follow-up x-rays for fractures of bones other than ankle bones.

Author's main point is We don't need follow up X rays after the ankle fracture become stable. He supports this argument by saying that :
When a number of follow-up x-rays were reviewed,however , all the fractures that had initially been judged stable were found to have healed correctly
Now their are many ways to strengthen the argument. In such questions involving data one can strengthen argument by adding more dimension to the data. Example here you can say that - data from different orthopedists was observed to another dimension to the argument and make it more plausible.

That's what choice C does. hence it is the answer.

Another way to think about it is :In case the premise was :
When a data from different Orthopedists x-rays was reviewed,however , all the fractures that had initially been judged stable were found to have healed correctly

The current premise would have strengthen it. ie Number of x rays from different orthopedists were studied.

Looking at other options :

(A) Doctors who are general practitioners rather than orthopedists are less likely than orthopedists to judge the stability of an ankle fracture correctly.
// We don't care about other doctors interpretations. out.

(B) Many ankle injuries for which an initial x-ray is ordered are revealed by the x-ray not to involve any fracture of the ankle.
//It talks about initial x rays. this doesn't affect out conclusion.out.

(C) X-rays of patients of many different orthopedists working in several hospitals were reviewed.//Correct.

(D) The healing of ankle fractures that have been surgically repaired is always checked by means of a follow-up x-ray.
// This actually weakens the author's argument.

(E) Orthopedists routinely order follow-up x-rays for fractures of bones other than ankle bones.
[i]//other bones? This doesn't support our argument. If anything it weakens it.[/i]

Last edited by Narenn on 05 Oct 2013, 11:37, edited 1 time in total.
All similar threads have been merged.
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Often patients with ankle fractures that are stable, and [#permalink]

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25 Feb 2015, 14:55
Good one !

Just used on of the techniques stated in the CR Bible --> Show that the data used to make the casual statement is accurate, or eliminate possible problems with the data --> (C) Illustrates the mentioned technique.

A) Doctors who are general practitioners rather than orthopedists are less likely than orthopedists to judge the stability of an ankle fracture correctly --> wrong comparison, absolutely irrelevant
B) Many ankle injuries for which an initial x-ray is ordered are revealed by the x-ray not to involve any fracture of the ankle --> Injury is not = fraction
C) X-rays of patients of many different orthopedists working in several hospitals were reviewed -->CORRECT. For the reason stated above
D) The healing of ankle fractures that have been surgically repaired is always checked by means of a follow-up x-ray.
E) Orthopedists routinely order follow-up x-rays for fractures of bone other than ankle bones.
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Re: Often patients with ankle fractures that are stable, and [#permalink]

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18 Mar 2017, 07:54
A: talks about other doctors, why do they judge it. irrelevant
B: talks about other ankle injuries. irrelevant
C: means survey was big enough. let's negate=>weaks. let's keep this one
D: surgically repared..irrelevant
E: other than ankle bones. one word off-common trap.

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Re: Often patients with ankle fractures that are stable, and [#permalink]

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26 Mar 2017, 06:03
IMO C : tells you that the study was extensive and done in a variety of environments, thus strengthening
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Re: Often patients with ankle fractures that are stable, and [#permalink]

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26 Mar 2017, 17:10
Tough one but I see why this is C - thanks!
Re: Often patients with ankle fractures that are stable, and   [#permalink] 26 Mar 2017, 17:10

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