Asked by Jessica Griffith on Aug 01, 2024
Verified
Two infectious disease epidemiologists want to investigate a new laboratory test that identifies tuberculosis (TB) infections.Dr.Merritt uses the standard test,which has a sensitivity of 80% and a specificity of 90%.Dr.Foundry uses the new laboratory test,which is 90% sensitive and 99% specific.In City A,it is known that 100 of 1,000 people have TB infections.What is the positive predictive value of the standard test in City A?
A) 10%
B) 47%
C) 53%
D) 80%
E) 90%
Tuberculosis
A serious infectious disease caused by the bacterium Mycobacterium tuberculosis, primarily affecting the lungs but can spread to other organs.
Positive Predictive Value
The proportion of positive test results that are true positives, indicating the likelihood that a person with a positive test actually has the disease.
Specificity
The capacity of an examination to accurately detect individuals who do not have the condition, known as the true negative rate.
- Calculate and recognize the significance of positive predictive value in the context of population prevalence.
Verified Answer
Learning Objectives
- Calculate and recognize the significance of positive predictive value in the context of population prevalence.
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