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3.5 周六 A 51
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. "
The newsletter recommends patients diagnosed with muscle strain to take antibiotics in the treatment. The author draws the conclusion from an experiment in which patients who take antibiotics heals quicker than the control group. However, the recommendation is lack of convincing support for several aspects.
First of all, there isn't any evidence demonstrating the relationship between secondary infections and muscle strains in the experiment. In fact, the author fail to present most if not all crucial information about the experiment, such as the number of patients in each group, the ratio of men to women, their detailed physical conditions and so on, let alone whether they are diagnosed with second infection. Perhaps many of them do not pick up the secondary infection, or perhaps most of the patients with a secondary infection concentrate in the control group, which may weaken the accuracy of the result.
Secondly, the author assumes that each group treated by different doctors will not affect the preciseness of the experiment. Yet the author presents no evidence to rule out the potential inaccuracy that doctor difference may bring about. It is entirely possible that the doctor of first group who specializes in sports medicine has a better medical skill on muscle strain than the general doctor. Or perhaps the general doctor misuses some medicine with the sugar pills, which plays a counterproductive role.
Last but not the least, even the experiment can reflect that antibiotics can reduce the recuperation time. I still disagree with the recommendation, for it is a common sense that the abuse of antibiotics had a badly side effect on human bodies. In the experiment, the doctor uses antibiotics "regularly". Considering no patient would choose the treatment one the cost of harmful side effect, this kind of recommendation is irresponsible.
In a word, the recommendation is untenable as it stands. To strengthen it the author need to revise the experiment to be more disinterested, and find a way to solve the side effect problem. Anyway, medical recommendation relates to the health of countless patients, thus no carelessness is permitted. |
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