GWD8-5,一道讨论贴里没有的题，请牛牛们看过了

sasha_wen

GWD-8-Q4-Q6:  

      Frazier and Mosteller assert that medical research could be improved by a move toward larger, simpler clinical trials of medical treatments. Currently, researchers collect far more background information on patients than is strictly required for their trials—substantially more than hospitals collect—thereby escalating costs of data collection, storage, and analysis. Although limiting information collection could increase the risk that researchers will overlook facts relevant to a study, Frazier and Mosteller contend that such risk, never entirely eliminable from research, would still be small in most studies. Only in research on entirely new treatments are new and unexpected variables likely to arise.

       Frazier and Mosteller propose not only that researchers limit data collection on individual patients but also that researchers enroll more patients in clinical trials, thereby obtaining a more representative sample of the total population with the disease under study. Often researchers restrict study participation to patients who have no ailments besides those being studied. A treatment judged successful under these ideal conditions can then be evaluated under normal conditions. Broadening the range of trial participants, Frazier and Mosteller suggest, would enable researchers to evaluate a treatment’s efficacy for diverse patients under various conditions and to evaluate its effectiveness for different patient subgroups. For example, the value of a treatment for a progressive disease may vary according to a patient’s stage of disease. Patients’ ages may also affect a treatment’s efficacy.

GWD-8-Q5 :

The author mentions patients’ ages(line 40) primarily in order to

A.      identify the most critical variable differentiating subgroups of patients

B.      cast doubt on the advisability of implementing Frazier and Mosteller’s proposals about medical research

C.      indicate why progressive diseases may require different treatments at different stages

D.      illustrate a point about the value of enrolling a wide range of patients in clinical trials

E.       substantiate an argument about the problems inherent in enrolling large numbers of patients in clinical trials

答案是D，为什么不能选C呢？请教牛牛们

优由圈

这个c说的是进展型疾病的不同阶段， 跟年纪没有关系， 很年轻的人也可能是xx病的晚期了。 实际上age那一句和progressive那一句是平行的关系， 前一句是说进展型疾病不同阶段的影响， 后一句是说年龄的影响。

我第一次做的时候也是选的c……

-- by 会员 biantaishabi (2010/1/15 7:32:19)

恍然大明白~！Patients’ ages mayalso affect a treatment’s efficacy.竟然忽略了also！

sasha_wen

谢谢，很受启发！

biantaishabi

这个c说的是进展型疾病的不同阶段， 跟年纪没有关系， 很年轻的人也可能是xx病的晚期了。 实际上age那一句和progressive那一句是平行的关系， 前一句是说进展型疾病不同阶段的影响， 后一句是说年龄的影响。

我第一次做的时候也是选的c……