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# The traditional treatment of strep infections has been a

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Re: CR-need help [#permalink]  26 Oct 2010, 12:52
(A) Some of the people who are allergic to penicillin are likely to be allergic to the new antibiotic - out of scope
(B) A course of treatment with the new antibiotic costs about the same as a course of treatment with either penicillin or erythromycin - cost is not in question
(C) The new antibiotic has been shown to be effective in eradicating bacterial infections other than strep. - this is of no use. it weakens the argument
(D) Some physicians have already begun to prescribe the new antibiotic instead of penicillin or erythromycin for the treatment of some strep infections. - physicians could be prescribing the new antibiotic for no reason.
(E) Regardless of whether they take a traditional antibiotic or the new one, most patients feel fully recovered after taking the drug for three days. - even though this does not make sense at all...this is the only option which states that regardless the individual will recover adding/strengthening the conclusion.

E it is
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Re: CR-need help [#permalink]  26 Oct 2010, 18:56
E no dispute
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Re: CR-need help [#permalink]  27 Oct 2010, 07:40
E
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Re: CR-need help [#permalink]  29 Oct 2010, 00:28
Undoubtedly E
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Re: CR-need help [#permalink]  07 Nov 2010, 04:57
Ans is E.
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Re: CR-need help [#permalink]  07 Nov 2010, 08:04
E+1
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Re: CR-need help [#permalink]  13 Dec 2010, 07:29
E IMO
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Re: CR-need help [#permalink]  28 Oct 2011, 05:17
Hello everyone,
picking up this old thread thanks to my daily delivery of GMAT delights in my emails

It's hard to undersand how E really strenghtens the argument.
Here is my explanation.

As said before, the argument is: patients taking old drug often stop treatment after 3 days, which leads to more reinfection cases; new drug is effective in 3 days, so reinfection should occur less often.

Choice E gives an explanation for the first part: patients stop after some time (3 days) because they feel better, even though the treatment is not over.
The same thing could happen with new drug: active in 3 days, fine, but what if you feel better after a couple of days? Well, choice E addresses this concern, hence reinforces the argument.

But I'll add that in less than 2 minutes, you should tackle the question differently: all the "out of scope" answer choices can be eliminated quickly. The argument is about reinfection/time for the drug to be effective/time patients take drug (~patients behaviour - inferred related to psychology).

E is the only choice that has all that, so it's enough to pick your choice without drilling too much into logic

my 2 Euros (not worth much these days)

cheers to all and keep it up!
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Re: CR-need help [#permalink]  28 Oct 2011, 06:32
E

The traditional treatment of strep infections has been a seven-day course of antibiotics, either penicillin or erythromycin. However, since many patients stop taking those drugs within three days, reinfection is common in cases where those drugs are prescribed. A new antibiotic requires only a three-day course of treatment. Therefore, reinfection will probably be less common in cases where the new antibiotic is prescribed than in cases where either penicillin or erythromycin is prescribed.

Which of the following, if true, most strengthens the argument?

(A) Some of the people who are allergic to penicillin are likely to be allergic to the new antibiotic.
Weakens the argument
(B) A course of treatment with the new antibiotic costs about the same as a course of treatment with either penicillin or erythromycin.
Out of scope - cost not mentioned in the argument
(C) The new antibiotic has been shown to be effective in eradicating bacterial infections other than strep.
Out of scope - other bacterial infections not referred to in the argument
(D) Some physicians have already begun to prescribe the new antibiotic instead of penicillin or erythromycin for the treatment of some strep infections.
Neutral. Some can equal 0 or 1 or greater.
(E) Regardless of whether they take a traditional antibiotic or the new one, most patients feel fully recovered after taking the drug for three days.
Correct Answer. As most patients feel fully recovered after 3 days, they are more likely to stop continuing the course. having finished 3 days on the new course lowers the probability of reinfection more-so than penicillin or erythromycin.
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Re: CR-need help [#permalink]  03 Nov 2011, 20:38
E
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Re: The traditional treatment of strep infections has been a [#permalink]  17 Nov 2011, 23:34
the answer to the question is E as E clearly strengthens the argument
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Re: The traditional treatment of strep infections has been a [#permalink]  18 Nov 2011, 00:18
E is good
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Re: The traditional treatment of strep infections has been a [#permalink]  27 Dec 2011, 22:17
E makes the most sense. Cost factor in B is just a trap.
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Re: The traditional treatment of strep infections has been a [#permalink]  28 Dec 2011, 16:35
E it is
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Re: The traditional treatment of strep infections has been a [#permalink]  30 Dec 2011, 01:46
this is my first CR attempt. and i got it wrong badly, thinking E is weakening the argument. gosh....
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Re: The traditional treatment of strep infections has been a [#permalink]  24 Jan 2012, 20:39
The traditional treatment of strep infections has been a seven-day course of antibiotics, either penicillin or erythromycin. However, since many patients stop taking those drugs within three days, reinfection is common in cases where those drugs are prescribed. A new antibiotic requires only a three-day course of treatment. Therefore, reinfection will probably be less common in cases where the new antibiotic is prescribed than in cases where either penicillin or erythromycin is prescribed.

Which of the following, if true, most strengthens the argument?

(A) Some of the people who are allergic to penicillin are likely to be allergic to the new antibiotic.
If so, people are equally unlikely to take both. Irrelevant.
(B) A course of treatment with the new antibiotic costs about the same as a course of treatment with either penicillin or erythromycin. Cost is out of scope.
(C) The new antibiotic has been shown to be effective in eradicating bacterial infections other than strep. Talks about other infections. not interested in them.
(D) Some physicians have already begun to prescribe the new antibiotic instead of penicillin or erythromycin for the treatment of some strep infections. This does not show that the new drug is better at not causing re-infection.
(E) Regardless of whether they take a traditional antibiotic or the new one, most patients feel fully recovered after taking the drug for three days. Correct. If the patient feels fully recovered, he will not take the drug anymore. By the end of these three days, however, the prescription of new drug will be completed. Hence, lesser chance of re-infection.
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Re: The traditional treatment of strep infections has been a [#permalink]  25 Jan 2012, 04:21
IMO E
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Re: The traditional treatment of strep infections has been a [#permalink]  27 Jan 2012, 16:23
Agree with E
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Re: The traditional treatment of strep infections has been a [#permalink]  06 Feb 2012, 07:33
spriya wrote:
The traditional treatment of strep infections has been a seven-day course of antibiotics, either penicillin or erythromycin. However, since many patients stop taking those drugs within three days, reinfection is common in cases where those drugs are prescribed. A new antibiotic requires only a three-day course of treatment. Therefore, reinfection will probably be less common in cases where the new antibiotic is prescribed than in cases where either penicillin or erythromycin is prescribed.

Which of the following, if true, most strengthens the argument?
(A) Some of the people who are allergic to penicillin are likely to be allergic to the new antibiotic.
(B) A course of treatment with the new antibiotic costs about the same as a course of treatment with either penicillin or erythromycin.
(C) The new antibiotic has been shown to be effective in eradicating bacterial infections other than strep.
(D) Some physicians have already begun to prescribe the new antibiotic instead of penicillin or erythromycin for the treatment of some strep infections.
(E) Regardless of whether they take a traditional antibiotic or the new one, most patients feel fully recovered after taking the drug for three days.

conclusion : reinfection would be less common in case of new antibiotic than either penicillin or erythromycin.

thus as per conclusion, our scope is limited to cases related to reinfection or relative effectiveness of two medications rather than about their relative cost, other infection or allergy. hence A,B, C could be crossed out.

D could be taken out even if some physician prescribe drug, people could still stop it taking after 1, 2 or 3 days, hence drug effectiveness is not directly dependent on physician

[color=#FF0000]E could not find any solid evidence to mark out E , so ultimately after POE I am left with E.

My only concern with E is people stop taking penicillin within 3 days, so this options definitely provide evidence that penicillin would not be effective and reinfection would occur, but how does this option provide justification tht chances of reinfection would be less for newer medicine [/color]
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Re: The traditional treatment of strep infections has been a [#permalink]  30 Oct 2012, 06:30
This is a good example of a question with good intent, but with a poor outcome. Answer choice E does nothing for the argument and those on here who have argued for it are making a common flaw in interpreting it.

There is a big difference between something because an outcome and that something being the only outcome. In this case, answer E says "most patients feel fully recovered after taking the drug for three days." This answer says nothing about when the patient first starts feeling better under the new drug, only that, at the three day mark, the patient feels better. The patient easily could have started feeling better during day 1 or day 2. Therefore, everyone has incorrectly interpreted this to fix the issue that patients might start feeling better before the dosage of the new drug is complete and stop taking it.

For example:

Quote:
With the new medicine too they would start feeling better only after 3 days; but by that time the new medicine would have done its job and hence no re-infection. (emphasis added)

However, the word "only" appears nowhere in the actual answer choice.

The obvious intention of the author was to have E eliminate the possibility that people stop using the new drug because they feel better before they finish treatment. E should therefore instead say:

(E) Regardless of whether they take a traditional antibiotic or the new one, most patients DO NOT feel fully recovered afterUNTIL taking the drug for three days.

Fortunately, we do not see this as a trap answer too much on actual GMAT questions. However, if you were to work some LSAT CR questions, you would see this come up a lot, especially in assumption, inference, and flaw questions.

Side note: B seems like the best alternative because it seems to eliminate a potential barrier. Whenever consumer choice is involved, cost is definitely relevant. In this case, B seems to eliminate the problem that the new drug is more expensive so people won't choose it. However, it has no effect because the conclusion limits the scope to "in cases where the new antibiotic is prescribed." Therefore, there is no consumer choice here, which, in this case, makes B irrelevant.
Re: The traditional treatment of strep infections has been a   [#permalink] 30 Oct 2012, 06:30

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