If a disease has a case fatality rate of 4% and there are 250 confirmed cases, h

Practice Questions

Q1
If a disease has a case fatality rate of 4% and there are 250 confirmed cases, how many deaths are expected? (2023)
  1. 8
  2. 10
  3. 12
  4. 15

Questions & Step-by-Step Solutions

If a disease has a case fatality rate of 4% and there are 250 confirmed cases, how many deaths are expected? (2023)
  • Step 1: Understand the case fatality rate (CFR). It tells us the percentage of people who die from a disease out of all confirmed cases.
  • Step 2: Identify the case fatality rate given in the question, which is 4%. Convert this percentage to a decimal by dividing by 100. So, 4% becomes 0.04.
  • Step 3: Identify the total number of confirmed cases, which is 250.
  • Step 4: To find the expected number of deaths, multiply the case fatality rate (0.04) by the number of confirmed cases (250).
  • Step 5: Perform the multiplication: 0.04 × 250 = 10.
  • Step 6: The result, 10, is the expected number of deaths from the disease.
  • Case Fatality Rate (CFR) – The proportion of deaths from a disease compared to the total number of diagnosed cases.
  • Basic Arithmetic – The ability to perform multiplication to calculate expected outcomes based on given rates.
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