Question

Assume a population of 100,000 people of whom 20 are sick with disease X and in 1 year 18 of the 20 die from Disease X. What is the mortality rate and what is the case-fatality rate? Again, show the formula

Answer 1

mortality rate is calculated by dividing the number of deaths by the population at risk during a certain time frame.

Case fatality rate is calculated by dividing the number of deaths from a specified disease over a defined period of time by the number of individuals diagnosed with the disease during that time;

population consists of 100,000 people; 20 of these people have the specified disease, 18 of whom die from the disease. In this case, the mortality rate for the disease is 18 ÷ 1,00,000 = 0.00018, or 0.018 percent. The case fatality rate is 18 ÷ 20 = 0.90, or 90 percent

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