Your Screening Test for Yellow Fever Had a Sensitivity of 88

question 11

Multiple Choice

Your screening test for yellow fever had a sensitivity of 88%, a specificity of 74% and a positive predictive value of 82% last year. This year there is an outbreak of yellow fever in the region increasing prevalence rates. You would expect the positive predictive value of the screen to:

• A) Be higher than 82% this year
• B) To remain at about 82% this year
• C) To be below 82% this year
• D) Unable to determine without the prevalence rate

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Definitions:

Observations

The act of carefully watching, listening, or noting phenomena as part of a research or study to gather information and insights.

Hypothesis

An assumption that is tested through research and experimentation.

Original Hypothesis

The initial theory or assumption that is made at the beginning of a research or experimental process, proposing a potential outcome.

Adapt

The ability to change or adjust oneself or one's approach to meet different conditions or environments.