An epidemiologist calculates the PPV of an RDT (95% sensitivity, 95% specificity) in a population with 1% malaria prevalence. What is the approximate ...

Question

An epidemiologist calculates the PPV of an RDT (95% sensitivity, 95% specificity) in a population with 1% malaria prevalence. What is the approximate PPV?

Accepted Answer

Approximately 16% - in low prevalence, most positives are false positives despite high specificity

Answer

95%

Answer

50%

Answer

100%

Answer

0%

uk-dtmh MCQ (SBA): PPV in Low Prevalence

An epidemiologist calculates the PPV of an RDT (95% sensitivity, 95% specificity) in a population with 1% malaria prevalence. What is the approximate PPV?