Tag research studies
Medmastery Epidemiology Essentials 340

Medmastery: PPV and prevalence

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.
Medmastery Epidemiology Essentials 340

Medmastery: PPV and Specificity

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.
CCC Critical Care compendium 340

Retrospective Studies and Chart Reviews

Retrospective studies are designed to analyse pre-existing data, and are subject to numerous biases as a result. Types of retrospective studies include: case series; retrospective cohort studies; case-control studies