Table 3 shows the number of lung cancer deaths per daily number of cigarettes smoked at the time of completing the 1951 questionnaire (only for male physicians who were nonsmokers and current smokers). The number of cigarettes smoked was available for 136 of the people who died of lung cancer. Number of cigarettes Deaths 3 22 54 57 Person-years 42800 38600 38900 0. 1-14 15-24 +24 25100 a) Estimate the appropriate measure of association and 95% confidence interval for each category of number of cigarettes smoked daily, using the group of non-smokers as the reference category. b) What can be inferred about the estimated measure of association in the different categories
Table 3 shows the number of lung cancer deaths per daily number of cigarettes smoked at the time of completing the 1951 questionnaire (only for male physicians who were nonsmokers and current smokers). The number of cigarettes smoked was available for 136 of the people who died of lung cancer. Number of cigarettes Deaths 3 22 54 57 Person-years 42800 38600 38900 0. 1-14 15-24 +24 25100 a) Estimate the appropriate measure of association and 95% confidence interval for each category of number of cigarettes smoked daily, using the group of non-smokers as the reference category. b) What can be inferred about the estimated measure of association in the different categories
Mathematics For Machine Technology
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Author:Peterson, John.
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Chapter29: Tolerance, Clearance, And Interference
Section: Chapter Questions
Problem 16A: Spacers are manufactured to the mean dimension and tolerance shown in Figure 29-12. An inspector...
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Transcribed Image Text:Table 3 shows the number of lung cancer deaths per daily number of cigarettes smoked at the time
of completing the 1951 questionnaire (only for male physicians who were nonsmokers and current
smokers). The number of cigarettes smoked was available for 136 of the people who died of lung
cancer.
Number of cigarettes
Deaths
3
Person-years
42800
0.
1-14
22
38600
15-24
54
38900
+24
57
25100
a) Estimate the appropriate measure of association and 95% confidence interval for each
category of number of cigarettes smoked daily, using the group of non-smokers as the
reference category.
b) What can be inferred about the estimated measure of association in the different categories
of number of cigarettes smoked daily?
c) What is the proportion of lung cancer deaths among all smokers that can be attributed
smoking? What is the proportion of lung cancer deaths in the total population that can be
attributed to smoking? consider that
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