Category Epidemiology
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.
Medmastery Epidemiology Essentials 340

Medmastery: Mortality rate

Franz Weisbauer explains how to calculate mortality rates for various subgroups, proportionate mortality, and why proportionate mortality is not a measure of risk.
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.
Eponymythology-LITFL-eponymythology 340 256

Just Read the Map

John Snow (1813-1858) was one of the first anaesthetists – he even chloroformed Queen Victoria! – but today he is famous for his investigation of the 1854 Broad Street cholera outbreak in Soho, London. By mapping the cases of cholera…


Investigative Epidemiology

Putting your head above the parapet Part of the joys of studying at the Liverpool Tropical School of Medicine is the weekly Wednesday lunchtime lectures. This week we were treated to investigative journalist Deborah Cohen (@deb-cohen), an award winning medically…