A Study Is Undertaken to Evaluate a New Serological Screening

A study is undertaken to evaluate a new serological screening test for the diagnosis of tuberculosis infection.  In the study, 1000 people were randomly selected from the population and given the new diagnostic test, and positive and negative results were recorded.  Each study participant also was given the gold standard diagnostic procedure to determine the true infection state of the individual.  The findings are as follows: Which of the following is the positive predictive value of the screening test under study?

A) 130/180
B) 130/190
C) 50/810
D) 760/810
E) 60/190

Correct Answer:

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