Question

The death rates from various conditions are often compared across geographic areas. These comparisons are usually...

The death rates from various conditions are often compared across geographic areas. These comparisons are usually based on directly age-standardized mortality rates. Which of the following best describes what is meant by an age-standardized rate created by the direct method? (Choose one best answer and explain why).

  1. The number of events in each age stratum of a standard population is used to create a weighted average rate.
  2. The event rates in each age stratum in the standard population are used to create a weighted average rate.
  3. The event rates in the geographic area of interest are applied to the age-stratum sizes of a standard population to create a rate that is a weighted average.
  4. The event rates in the geographic area of interest are compared to the event rates of a standard population to create a summary rate that is a weighted average.
Math   Statistics-And-Probability   
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Answer #1

The correct option is (c) . Please refer to the image for further explanation

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