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Question: researchers are interested in learning more about patients who...

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_____ Researchers are interested in learning more about patients who developed diabetes during the past year in the US. Which measure would researchers select in order to learn more about the development of new cases of diabetes among US residents during the past year? (Hint: this measure focuses on the transition from healthy to ill, so its calculations would not include people who, for example, were diagnosed with diabetes 30 years ago).

a) prevalence of diabetes

b) incidence of diabetes

c) mortality from diabetes

d) none of the above

_____ Identify which of the following measure(s) would be impacted by a procedure that is found to completely cure arthritis. It should be noted that in this example, the treatment does not prevent arthritis from developing; however, once a person developed arthritis, they could be completely cured of it by undergoing this procedure. This procedure would affect:

a) the prevalence of arthritis, but not the incidence

b) the incidence of arthritis, but not the prevalence

c) both the incidence and prevalence of arthritis

d) neither the incidence nor the prevalence of arthritis

______ Consider the theoretical introduction of a prophylactic treatment that is 80% effective in preventing dementia from developing in elderly patients. Assume that this treatment cannot reverse dementia in those who already have developed it, but that it is 80% effective in preventing dementia in those who have not yet shown signs. During the ten years following the introduction of this treatment, which of the following would be impacted?

a) the prevalence of dementia would be impacted, but not the incidence of dementia

b) incidence of dementia would be impacted, but not the prevalence of dementia

c) both the prevalence and incidence of dementia would be impacted

d) neither the prevalence nor the incidence of dementia would be impacted

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