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Estrogen alone increases the risk of uterine cancer and of [#permalink]
01 Apr 2004, 06:54
50% (02:21) correct
50% (01:10) wrong based on 3 sessions
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1.Estrogen alone increases the risk of uterine cancer and of breast cancer. Estrogen combined with the progestin does not increase the
risk of uterine cancer; this combination does cause the same increase
in risk for the breast cancer as does estrogen alone.
If the above information is correct , which of the following would be
an expected result?
a. More women taking estrogen alone will develop uterine cancer than
b. Fewer women taking neither estrogen nor progestin will develop
uterine cancer than women taking estrogen and progestin.
c. more women taking estrogen alone will develop breast cancer than
women taking estrogen and progestin.
d. Fewer women taking only progestin will develop uterine cancer than
women taking estrogen and progestin.
e. The same percentage of women taking estrogen and progestin will
develop uterine cancer as women taking neither estrogen nor progestin.
A ) not correct because effect of estrogen on breast cancer and uterine cancer is not compared individually
B) This also cannot be infered because combination of the two drugs reduces the risk but no comparision w.r.to those not taking is given
C) is the most reasonable - as the stem says combinations does not result in the same increase of risk ( well this can be refuted - may be the risk is more )
D) No effect or progetrin alone is described
E) We dont know this. Not taking progestin might increase the chances of any one cancer.
Because all that the stem says is progestin neither reduces nor increases the chance of uterine cancer. Since estrogen increases the risk then women who dont take it are less vulnerable than those who take it.
in C, let's say
50% of people taking nothing have U cancer
30% of people taking E alone have U cancer
We know that taking P+E will not increase risk of having cancer
Therefore, if people taking nothing start taking P+E, the number of them can still be greater than that of those taking E alone. C is refuted
Anandnk, you have too much an influence on my answers and make me think over again _________________
Oh Yeah is E.
Choice E is correct. choice A compares the rates of uterine and
breast cancer which would result from taking the estrogen alone, but
the statements do not provide a basis for such a comparison. Choice B
is not specific enough. It could be true if the final phrase
read "than women taking estrogen alone", or false if the final phrase
read " than women taking estrogen and progestin". As it stands ,
choice B is indeterminate. The conditions outline in choice C would
result in the same risk for both, as is explained in the final
phrase: " however ,this combination does cause the same increase in
the risk for breast cancer as estrogen alone". Choice D mentions a
category , women taking only progestin, which is not mentioned in the
statements. If estrogen and progestin combined result in no increase
in the risk of uterine cancer, then we would expect the conditions of
the correct choice, E : women taking neither harmone and women taking
both harmones will develop uterine cancer at the same rate.
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