A Screening Test for a Newly Discovered Disease Is Being

question 77

Multiple Choice

A screening test for a newly discovered disease is being evaluated. In order to determine the effectiveness of the new test, it was administered to 900 workers. 150 of the individuals diagnosed with the disease tested positive. A negative test finding occurred in 60 people who had the disease. A total of 50 persons without the disease tested positive for it. Assume the prior probability is not known.
-What is the prevalence of disease cases in the population?

• A) 77%
• B) 75%
• C) 9%
• D) 23%
• E) None of these is correct.

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Definitions:

Molecular Clock Estimates

Techniques that use the rate of molecular change to deduce the time in geological history when two species or other taxa diverged.

SIV Diversification

SIV Diversification refers to the process through which the Simian Immunodeficiency Virus (SIV) evolves and generates genetic variability among its populations.

Gene Coalesce

A concept in molecular genetics where different alleles at a gene locus in different lineages trace back to a single ancestral allele.