QUESTION:
Blood tests used to determine pregnancy can at times be inconclusive. This means that the test has been unable to determine if the woman is pregnant or not pregnant. Regardless, some doctors refuse to perform further surgeries because of an inconclusive pregnancy test result.
If the statements above are true, which of the following conclusions is strongly supported by them?
A. Pregnancy tests should always be given prior to surgery
B. Most women with inconclusive pregnancy tests are actually pregnant
C. Some surgical procedures are affected by whether or not a woman is pregnant
D. Some doctors require a pregnancy test be given when evaluating female candidates for any surgery
E. A pregnancy test that returns a negative result is sometimes incorrect
ANSWER:
Here’s what we know:
1) pregnancy tests can be inconclusive and 2) doctors sometimes refuse to perform surgeries because an inconclusive test
What must be true based on this?
A) No reason to believe that pregnancy tests should “always” be given. (What if the patient is 7 years old or 97?)
B) No reason to believe that inconclusive = pregnant.
C) This looks good. If some doctors refuse to perform surgery as a result of an inconclusive test, it stands to reason that some surgical procedures would be impacted by whether the patient is pregnant.
D) No reason to believe that there are doctors who require a pregnancy test before “any” surgery. Some surgeries might be safe while others, less so.
E) We have no idea if there are false negatives. We just know that there inconclusive results.
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