In a district, 200 patients are diagnosed with typhoid fever and 10 of them die from the disease. Which measure is calculated as 10 divided by 200, multiplied by 100?
Correct answer: C. Case-fatality rate
- A. Crude mortality rate
- B. Incidence rate
- C. Case-fatality rate
- D. Proportional morbidity rate
Explanation
The case-fatality rate is the percentage of diagnosed patients who die from the disease. In this example, it is 10 divided by 200 multiplied by 100, giving 5 percent. It is not the mortality rate for the whole district.
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About Epidemiology and Biostatistics
Epidemiology examines the distribution and causes of disease by person, place and time, using measures such as incidence, prevalence, mortality and case-fatality rates. Biostatistics covers data presentation, sampling, averages, variability, probability and interpretation of study results, while distinguishing association from causation.
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