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A disease has an incidence of 10 per 1,000 persons per year, and 80% of those...

A disease has an incidence of 10 per 1,000 persons per year, and 80% of those affected will die within 1 year. Prior to the year 2000, only 50% of cases of the disease were detected by physician diagnosis prior to death. In the year 2000, a lab test was developed that identified 90% of cases an average of 6 months prior to symptom onset; however, the prognosis did not improve after diagnosis. Which statement is true concerning the disease-specific mortality rate after the development of the lab test?

Select one:

a. The mortality rate for the disease is decreased in 2000

b. The mortality rate for the disease is the same in 2000

c. The mortality rate for the disease is increased in 2000

d. No inference about the mortality rate can be made since the lab test has only been available for 1 year

math   Statistics-And-Probability   
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Answer #1

Option B is correct

Which statement is true concerning the disease-specific mortality rate after the development of the lab test?

The mortality rate for the disease is the same in 2000

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