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28 Aug 2009, 06:48
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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60% (01:18) correct
40%
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wrong
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Although perioral dermatilis rashes are believed to be caused by reactions to sodium laurel sulfate (SLS) found in shampoos and other personal care products, instructing patients to eliminate all products with SLS frequently does not stop perioral dermatilis. Obviously, some other cause of perioral dermatilis besides reaction to SLS exist.
Which of the following would most seriously weaken the conclusion?
a. Many personal care products elicit an allergic skin response only after several days, making it very difficult to observe between specific products patients use and the perioral dermatilis they develop
b. Skin allergies affect many people who never develop the symptom of perioral dermatilis
c. Many patients report that the personal care products that cause them perioral dermatilis are among the products they most enjoy using
d. Very few patients have allergic skin reactions as children and then live rash-free adult lives once they have eliminated products to which they have been demondstrated to be allergic
e. Very rarely do personal care products cause patients to suffer a symptom more severe than that of perioral dermatilis rashes
OA
Please explain.
Which of the following would most seriously weaken the conclusion?
a. Many personal care products elicit an allergic skin response only after several days, making it very difficult to observe between specific products patients use and the perioral dermatilis they develop
b. Skin allergies affect many people who never develop the symptom of perioral dermatilis
c. Many patients report that the personal care products that cause them perioral dermatilis are among the products they most enjoy using
d. Very few patients have allergic skin reactions as children and then live rash-free adult lives once they have eliminated products to which they have been demondstrated to be allergic
e. Very rarely do personal care products cause patients to suffer a symptom more severe than that of perioral dermatilis rashes
OA
A. WHY???????
If the reaction comes in a few days after the product was used, it means that the probability of that there are many other causes of rashes increases (there could be many more other reasons in those several days. Hence, this makes the statement even stronger! Where am I wrong?)
If the reaction comes in a few days after the product was used, it means that the probability of that there are many other causes of rashes increases (there could be many more other reasons in those several days. Hence, this makes the statement even stronger! Where am I wrong?)
Please explain.
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28 Aug 2009, 08:29
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I found the official explanation to this, but it is really weird...
"If it is difficult to determine which products cause dermatilis, then some products that cause rashes might not have been demonstrated to do so. Hence, eliminating products that have been demonstrated to cause dermatilis might not eliminate dermailis, even if personal care products are the only cause of dermatilis. Choice A is the best answer".
"If it is difficult to determine which products cause dermatilis, then some products that cause rashes might not have been demonstrated to do so. Hence, eliminating products that have been demonstrated to cause dermatilis might not eliminate dermailis, even if personal care products are the only cause of dermatilis. Choice A is the best answer".
