Introduction to Epidemiology 6th Edition by Ray M Merrill

Exercise 5

Everyone eventually dies; thus, why isn’t the case-fatality rate for a given disease 100%?

Step 1 of 2

Case-fatality rate (CFR) is the proportion of individuals within a test population with a particular disease who die during the course of the disease. CFR is calculated using optimally treated patients excluding isolated cases or minor outbreaks. CFR is a measure of risk and is conventionally expressed as a percentage. It can be calculated by the following formula: