Question 2 You have read in the literature that the risk of death from stroke differs between males and females. The following are hypothetical stroke mortality data from two Canadian cities, Yellowknife and Whitehorse. Yellowknife Whitehorse No. of Sex People Number of Stroke Deaths No. of Number of People Stroke Deaths Male Female 330,000 240,000 3,450 2,070 90,000 1,800 150,000 1,440 (a) Using a hand calculator, compute the crude and sex-specific risk of death from stroke in each of the two cities (b) Compute the 95% binomial exact confidence intervals of the risks computed in (a) above (c) Is it valid to use crude risk to compare the risks of death from stroke between the two cities? (d) Explain your answer in (c) above.

Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Chapter36: Circulation
Section: Chapter Questions
Problem 3DAA
Question
Question 2
You have read in the literature that the risk of death from stroke differs between males and
females. The following are hypothetical stroke mortality data from two Canadian cities,
Yellowknife and Whitehorse.
Yellowknife
Whitehorse
No. of
Sex
People
Number of
Stroke Deaths
No. of
Number of
People
Stroke Deaths
Male
Female
330,000
240,000
3,450
2,070
90,000
1,800
150,000
1,440
(a) Using a hand calculator, compute the crude and sex-specific risk of death from stroke in each
of the two cities
(b) Compute the 95% binomial exact confidence intervals of the risks computed in (a) above
(c) Is it valid to use crude risk to compare the risks of death from stroke between the two cities?
(d) Explain your answer in (c) above.
Transcribed Image Text:Question 2 You have read in the literature that the risk of death from stroke differs between males and females. The following are hypothetical stroke mortality data from two Canadian cities, Yellowknife and Whitehorse. Yellowknife Whitehorse No. of Sex People Number of Stroke Deaths No. of Number of People Stroke Deaths Male Female 330,000 240,000 3,450 2,070 90,000 1,800 150,000 1,440 (a) Using a hand calculator, compute the crude and sex-specific risk of death from stroke in each of the two cities (b) Compute the 95% binomial exact confidence intervals of the risks computed in (a) above (c) Is it valid to use crude risk to compare the risks of death from stroke between the two cities? (d) Explain your answer in (c) above.
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