26) Which of the following statements is true when describing Sensitivity? Quest
ID: 135912 • Letter: 2
Question
26) Which of the following statements is true when describing Sensitivity?
Question 26 options:
A)
It relates to how a practitioner interprets a test result.
B)
It is the ability of a test to correctly identify people who have the disease you are testing for.
C)
It tells you the probability that a test reflects a person who has the disease.
D)
It measures the effectiveness of a test in returning a negative test result to people who do not have the disease.
27) Which of the following statements is NOT true when describing Sensitivity?
Question 27 options:
A)
It is the ability of a test to correctly identify people who have the disease you are testing for.
B)
It tells you the probability that a test reflects a person who has the disease.
C)
It measures a marker of a given disease, and may not detect all cases of disease.
D)
It increases or decreases in relation to the specificity of your test.
29) Which of the following statements is true when describing Specificity?
Question 29 options:
A)
It tells you the probability that a negative test result reflects a person who does not have the disease.
B)
It is the ability of a test to correctly identify people who have the disease you are testing for.
C)
It is affected by the prevalence of disease within the population you are testing.
D)
It measures the effectiveness of a test in returning a negative test result to people who do not have the disease.
A)
It relates to how a practitioner interprets a test result.
B)
It is the ability of a test to correctly identify people who have the disease you are testing for.
C)
It tells you the probability that a test reflects a person who has the disease.
D)
It measures the effectiveness of a test in returning a negative test result to people who do not have the disease.
Explanation / Answer
26. The answer is B. Sensitivity measures the proportion of actual positives that are correctly identified as such e.g. the percentage of sick people who are correctly identified as having the condition. A test with 100% sensitivity will recognize all patients with the disease by testing positive. A negative test result would definitely rule out presence of the disease in a patient.
27. The answer is C. The marker of a disease can be detected by screening tests but not sensitivity.
29. The answer is A. Specificity measures the proportion of actual negatives that are correctly identified as such.
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