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本帖最后由 Bela1229 于 2010-2-25 21:32 编辑
费了牛鼻子劲,才码了444个字,好可怜~~
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TOPIC: ARGUMENT51 - The following appeared in a medical newsletter.
"Doctors have long suspected that secondary infections may keep some patients from healing quickly after severe muscle strain. This hypothesis has now been proved by preliminary results of a study of two groups of patients. The first group of patients, all being treated for muscle injuries by Dr. Newland, a doctor who specializes in sports medicine, took antibiotics regularly throughout their treatment. Their recuperation time was, on average, 40 percent quicker than typically expected. Patients in the second group, all being treated by Dr. Alton, a general physician, were given sugar pills, although the patients believed they were taking antibiotics. Their average recuperation time was not significantly reduced. Therefore, all patients who are diagnosed with muscle strain would be well advised to take antibiotics as part of their treatment."
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In this artical , the author recommend that doctors should adivise the patients who surfer from mascle strain to tale antibiotcs in their treatment . The recommendation has been supported by an experiment which ,in author's opinion, had proved that secondary infection keep patients healing from muscle strain . To me , both the experiment and the recommendation can not withstand scrutiny , the reasons are as follow.
To begin with , Let's look through the experiment: first, the author did not provide any information about two group of patients , did they
have the same state of illness? How about their medical history ? Were the ratio of male and female same in both study group? With out specific information , we can never know the experiment was based on the
unbiased samples which is the fundamental element in every compare experiment . Second, even if two group
of the patients is almost same, the author fails to tell us did the first group patients take other treatment beside antibiotics so as the second group did they take other practics besides suger pill? Thirdly , even if both groups just took pill without other treatment , we can still question that the effect of different doctor . There are some other weakness in this experiment , but with these three doulbt , we can not conclude that the experiment is scientific.
Then , let's analyze the conclusion which is deduced by the result of experiment. The author metioned that in the first group the recuperation time reduced by 40 percent than expected , without exact number of time we can not
use this 40 percent to compare with recuperation time in second group . Even though the author tell us that the time of second group was not reduced significantly , but there still possible that the time of second group is smaller than 0.6 multiply typical expected time of the first group.
Last ,even if we assume the experiment and the conclusion are both trustable which means the antibiotic drug do have some effect in the treatment of muscle strain , it is still unconvince to say the hypothesis has been proved because there is no information to point out that the antibiotics can heal the secondary infection . And the antibiotics works on certain group of people does not necessiarily means it works on every other patients .
To sum up , with out more convintional evidence , I can not accepted this recommendation . The author should provid more information about experiment to make it trust worthy and the conclusion should been got based on the more credible fact. |
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