sqube wrote:
Hi Karishma.
I am facing issues with Strengthen /Weaken Qs particularly of below type. What should be our strategy for such type ?
Often patients with ankle fractures that are stable, and thus do not require surgery, are given follow-up x-ray 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.
Hey sqube,
The most important aspect of any strengthen/weaken question is to identify the conclusion.
What is the conclusion in this question?
- it is a waste of money to order follow-up x-rays of ankle fracture initially judged stable.
In other words, when a fracture is initially judged stable, it is stable. No need to get a follow up x ray. The orthos do a get enough job when they review the fracture as stable initially.
So now we need to strengthen our conclusion.
(A) Doctors who are general practitioners rather than orthopedists are less likely than orthopedists to judge the stability of an ankle fracture correctly.
This does not strengthen our conclusion. We don't know whether sometimes general practitioners judge the initial stability of fractures but if they do, actually we do need to have a follow up x ray (since they may not do as good a job as orthos)
(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.
Irrelevant. This talks about injuries which are not fractures. We are only concerned about ankle fractures which are initially judged stable. Rest of the injury universe is irrelevant to us.
(C) X-rays of patients of many different orthopedists working in several hospitals were reviewed.
This is interesting. We are concluding that we don't need follow up x rays, that orthos are capable of identifying stable fractures initially itself. If we had reviewed various diff orthos from various diff hospitals, it means that generally, orthos are capable. It strengthens our conclusion. Say if most of the x rays reviewed were of a single ortho, can we say that we don't need to get a second x ray done? What if that particular ortho is capable but others are not? Checking the skills of various orthos helps better establish that a second x ray if not needed. This is the answer
(D) The healing of ankle fractures that have been surgically repaired is always checked by means of a follow-up x-ray.
This is talking about ankle fractures which are not deemed stable initially (since they need surgery). Again, this is outside the scope of our argument. What happens with unstable ankle fractures we don't care. The only relevant topic is "ankle fractures which are initially judged stable".
(E) Orthopedists routinely order follow-up x-rays for fractures of bone other than ankle bones.
Again, as we said before, rest of the injury universe is irrelevant to us.
Answer (C)