ChaseDream

标题: OG10th 172 结论是什么，谁帮我用lawyer讲讲吖 [打印本页]

作者: xiaoxiaomi 时间: 2011-3-31 23:55
标题: OG10th 172 结论是什么，谁帮我用lawyer讲讲吖

172. There is a great deal of geographical variation in the frequency of many surgical procedures—up to tenfold variation per hundred thousand between different areas in the numbers of hysterectomies, prostatectomies, and tonsillectomies.

To support a conclusion that much of the variation is due to unnecessary surgical procedures, it would be most important to establish which of the following?

(A) A local board of review at each hospital examines the records of every operation to determine whether the surgical procedure was necessary.

(B) The variation is unrelated to factors (other than the surgical procedures themselves) that influence the incidence of diseases for which surgery might be considered.

(C) There are several categories of surgical procedure (other than hysterectomies, prostatectomies, and tonsillectomies) that are often performed unnecessarily.

(D) For certain surgical procedures, it is difficult to determine after the operation whether the procedures were necessary or whether alternative treatment would have succeeded.

(E) With respect to how often they are performed unnecessarily, hysterectomies, Bprostatectomies, and tonsillectomies are representative of surgical procedures in general.

这道题怎么讲

作者: sdcar2010 时间: 2011-4-1 08:52
BBBBBBBBBBBbb

B strengthens the conclusion of "much of the variation is due to unnecessary surgical procedures."

作者: jeanblanc 时间: 2011-4-2 15:15
sdcar2010大N,你的真身到底是帅哥还是美女啊？一直很好奇？呵呵

作者: sdcar2010 时间: 2011-4-2 21:47
A magician never reveals his secret.

A mysterious person never reveals his/her face.

欢迎光临 ChaseDream (https://forum.chasedream.com/)