Medmastery: PPV and Specificity
Professional development
The team at Medmastery are providing LITFL readers with a series of FOAMed courses from across their website.
Description
In this video, Franz Wiesbauer looks at the impact of specificity and sensitivity on positive predictive value (and thus validity of a test) and why one has a bigger impact than the other.
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Course Details
Introductory
3 CME
Professional development
Epidemiology Essentials
Course description
Do you want to be able to read and make sense of medical literature? This course provides a solid foundation in clinical epidemiology—one that you can build on with more advanced epidemiology in the future. We’ll teach you how to measure and express mortality, incidence, and prevalence, how to express prognosis, the essential basics of clinical trials, how to measure test validity, and more!
30 Lessons
6 Quizzes
3 CME
Course Highlights
Mortality rates are amongst the most important indicators in epidemiology. They are used when trying to express the risk of dying from a certain disease. In this video from Epidemiology Essentials, Franz Weisbauer explains the nuts and bolts of mortality rates; how to calculate mortality rates for various subgroups; the concept of proportionate mortality; and understand why proportionate mortality is not a measure of risk.
Positive predictive value (PPV) and prevalence
In this video, Franz Wiesbauer looks at how a doctor can work out the probability of disease when confronted with a positive or a negative test result and how the prevalence of a given disease affects this probability.
In this video, Franz Wiesbauer explains how to express prognosis with the help of life tables and why this is essential to understanding Kaplan Meier curves.
Medmastery
Online Education
Medmastery courses and workshops are fully CME accredited providing US (AMA PRA Category 1 CreditsTM) and European (ECMECs) CME credits. Members can download their CME certificates upon successful completion of activities. Register now for a free trial and check it out!