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A New Assay Is Used to Test 120 Samples from Patients

question 21

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A new assay is used to test 120 samples from patients with a clinically confirmed diagnosis of the relevant infection and 50 samples from healthy control subjects.The test results were positive for 90 of the infected patients and positive for 10 of the healthy controls.
-Calculate the positive predictive value of the assay.


Definitions:

Split Button

A GUI element that combines a button and a dropdown list, giving the user the ability to either click the button for a default action or use the dropdown to select a variant of the action.

Switch Button

A control element in a graphical user interface that allows the user to toggle between two or more choices.

Taskbar

A bar visible on a computer desktop that shows running applications and provides shortcuts to system and program functions.

Center Button

Typically refers to a central button on a device or application that is used for navigating or selecting options.

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