17. Lists of hospitals have been compiled showing which hospitals have patient death rates exceeding the national average. The data have been adjusted to allow for differences in the ages of patients.
Each of the following, if true, provides a good logical ground for hospitals to object to interpreting rank on these lists as one of the indices of the quality of hospital care EXCEPT:
(A) Rank order might indicate insignificant differences, rather than large differences, in numbers of patient deaths.
(B) Hospitals that keep patients longer are likely to have higher death rates than those that discharge patients earlier but do not record deaths of patients at home after discharge.
(C) Patients who are very old on admission to a hospital are less likely than younger patients to survive the same types of illnesses or surgical procedures.
(D) Some hospitals serve a larger proportion of low-income patients, who tend to be more seriously ill when admitted to a hospital.（C）
(E) For-profit hospitals sometimes do not provide intensive-care units and other expensive services for very sick patients but refer or transfer such patients to other hospitals.
为什么不是A, 看起来像无关选项。
C不是于这个排名相抵触的吗？这个排名可能不准确呀，因为老人的大病生存率小于年轻人。有的议员可能接受的都是老年人，死亡率高，要是妇产医院，可能就没什么死亡率。
再好好看看题，不是问哪个不反对这种排名方法的吗？不就是问哪个支持的？C正好说明老年人患同样的病死亡率高，那个排名不是考虑到患者年龄因素造成的死亡率差异了嘛，所以C是支持。
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