Statistical Education Resource Kit

(Medical) Diagnostic Testing

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Table of Contents

(Medical) Diagnostic Testing

The situation

Situation presented in a two-way table

Definitions

Goal

Accuracy of tests in development

In conditional probability notation

Example

Example (continued)

Interpretation of accuracy

Alternatively

Example

Example (continued)

Accuracy of tests in use

In conditional probability notation

Example

Example (continued)

Caution about predictive values!

Example

Example (continued)

Example

Example (continued)

Morals

Find correct predictive values by knowing….

Example: PPV of pap smears?

Example

Example

Example

Example

Example

Example (continued)

What to know

Author: Laura J. Simon 

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This web page was submitted by Laura J. Simon: lsimon@stat.psu.edu