求解GWD-YN-10 Q22

happycjc108

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.

答案是C,无法理解。。。

robertwu82

C说明样本的数量足够大,题目说“a number of follow-up x-rays were reviewed,”，选项C说明，不同医院不同大夫，许多病人的X-rays都被review过。

kaikaichen

感觉是这样解释的：如果这个情况只发生在个别医院或个别医生身上，有可能是因为这些医院和医生的医术高超，判断准确，后续x-ray和最初诊断的结论一致。如果换了个医院或医生，也许他们就没那么高明，后续x-ray检查就是必要的

C就是排除这种可能，说明这是一种普遍情况

gtr

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.

答案是C,无法理解。。。

-- by 会员 happycjc108 (2010/2/4 21:21:38)

事实1：如果只是骨裂，那就不用做手术。
事实2：很多x光诊断为骨裂的案子，的确也只是骨裂。


结论： 所以后来的x光浪费了，还不如不拍。


这里面的假设就是：医生不是很肯定自己的最初诊断，要通过不停的拍x光，来验证自己最初诊断的正确性。


什么能够加强这个结论？


那就要选择消除医生自己怀疑自己错的疑虑，加强最初诊断正确性的选项。


C：如果第一次的x-ray是很多医生一起看，那么错误的概率就下降了。也就没有必要不停的拍了。


C的确可以加强最初诊断的正确性，所以后来的x-ray就不用拍了。

karateguy

这题到底是B还是C,GWD答案是B...confuse了。。。

wwhappy

C选项是说，同一个病人的x-ray被许多医生检查？是这个意思吗？

bonnie0715

Often patients with ankle fractures that are stable, and thus do notrequire surgery, are given follow-up x-rays because their orthopedistsare concerned about possibly having misjudged the stability of the fracture. When a number of follow-up x-rays were reviewed, however, allthe fractures that had initially been judged stable were found to havehealed 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 areless 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 revealedby the x-ray not to involve any fracture of the ankle.

C.      X-rays of patients of many different orthopedists working in severalhospitals were reviewed.

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

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

答案是C,无法理解。。。

-- by 会员 happycjc108 (2010/2/4 21:21:38)

事实1：如果只是骨裂，那就不用做手术。
事实2：很多x光诊断为骨裂的案子，的确也只是骨裂。


结论： 所以后来的x光浪费了，还不如不拍。


这里面的假设就是：医生不是很肯定自己的最初诊断，要通过不停的拍x光，来验证自己最初诊断的正确性。


什么能够加强这个结论？


那就要选择消除医生自己怀疑自己错的疑虑，加强最初诊断正确性的选项。


C：如果第一次的x-ray是很多医生一起看，那么错误的概率就下降了。也就没有必要不停的拍了。


C的确可以加强最初诊断的正确性，所以后来的x-ray就不用拍了。

-- by 会员 gtr (2010/2/5 4:55:21)

我觉得C是说一个病人被很多不同医院的不同医生看，导致照了N次X-ray吧。所以N-1次都是完全不必要的

levix

这道题我觉得是这样的，原文说“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”。 这个结论的得出是因为看过很多X光的follow-up,发现全都被治好了，那么前提就是“必须看过很多才能得出这样的结论”。如果才看过一两个而得出结论，那这样的结论没有说服力。

增强论据题型。

elaine2011

同意楼上，前提：必须看过很多医生了检查出来都是没有问题，才能够说明反复拍X光是种浪费。

Kb24

C means the sample of the survey is big enough to ensure credibility of the review. - hence strengthens the argument.  It doesn't mean one single patient be repeatedly diagnosed by different orthopedists.

stefanie4125

同意5#，反应普遍情况