Assume That a Certain Test for Group a Streptococcus Has

question 26

Multiple Choice

Assume that a certain test for group A Streptococcus has reported sensitivity and specificity of 90% and 98%, respectively, and the estimated prevalence for group A Streptococcus infection in acute pharyngitis is 5%. What is the PPV of this test?

• A) 99.5%
• B) 30%
• C) 90%
• D) 70.3%

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