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51The 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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提纲:
1第一组的人可能受的伤比较轻微。或者第一组是脑力工作者,第二组是体力工作者,两个医生的医术不同
2没吃antibiotics不代表被secondary infected
3severe
In the newsletter, the author cites a survey to prove his point that antibiotics accelerate recovery from muscle injuries by preventing secondary infections. However, the survey itself has several flaws in its failure to mention the difference in samples and skills of doctors which may affect its congency to a large extent, hus undermining his argument.
To begin with, it should be noticed that not just antibiotics may count for the quicker recovery but also the original difference between the two groups is likely to play a role. To be exact, it is possible that the first group suffer a much slighter injury than the other one. Also chances are that the second group of patients are mainly blue-collar workers who have to do a great amount of physical work and can't get a good rest for recovery. On top of that, what may influence the results as well is the skills of the two doctors. If Dr. Newland is more experienced and excellent than Dr. Alton, there should be no surprise his patients recover faster than those of Dr. Alton. Actually without adequate information about the two groups, no necessary correlation can be established between their disparity in healing process and whether they take antibiotics or not.
Furthermore, even for those who did not take antibiotics, it doesn't necessarily mean that they got secondary infections. Had no one shown sign of being infected, though they had not taken antibiotics, surely their healing had nothing to do with secondary infections. As a consequent, the author is expected to provide such information for his conclusion to be convincing enough.
Finally, while the assumption raised concerns about patients of "severe" muscle strains, not a word is mentioned as to whether injuries of the surveyed patients are mild or serious. Perhaps their muscle strains are so slight that even if antibiotics play a critical role in helping them heal, the hypothesis can still not be proved.
To sum up, the newsletter is weakened a lot by its ignorance of difference in the two groups, the severance of their injuries and the fact that not taking antibiotics doesn't absolutely lead to secondary infections. With all these flaws, the argument is quite lean. |
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