"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."
In the argument, the author reaches the conclusion that all patients experienced muscle strain should be recommended to take antibiotics. The basis for the conclusion is as followed: Doctors have doubted that secondly infections have bad influence for healing severe muscle strain; and the result of the study of two groups of patients is about the relationship between using antibiotics or not with recuperation time. The conclusion lacks credibility because of the evidence cited in the argument does not lend strong support to what the author mentions.
At first, the author fails to take into account the difference between the two groups, therefore the survey is uninformative and unreasonable and can not offer sufficient validating to the conclusion.
The different people with different physical performance in different group will exert influence to get the effective result of the study because perhaps some of them have more strong immunity than others which possible put good affection to the recuperation. And similar to this, the muscle strain of the patients was treaded by different doctors whose ability and treating ways are not possible entirely same to the other.
Secondly, even assuming that the survey is effective and the recuperation time of patients taking antibiotics is shorter than the others who only took sugar pills, there is still no convincing data available to justify casual relationship between taking antibiotics with the short recuperation time. In all likelihood there are other numerous reasons which account for the short recuperation time such as their positive attitude in mind, more physical exercise everyday and excellent treatment from doctor.
Lastly, in the argument, the author unwarrantedly assumes that taking antibiotics can keep patient from secondly infections. There is no sufficient reason quoted in the argument offering convincing validation to this point. Therefore we have good reason to doubt it has not such affection and perhaps has serious influence to patients’ recuperation. And at the same time, it is possible other medicines have the ability of shorting recuperation time.
All in all, the evidence cited in the argument is vague and incomplete, thus does not lend strong support to the conclusion that the author maintains. To better evaluate this conclusion, we need more information concerning whether the taking antibiotics has such good effect and what influents patients with muscle strain quick healing.