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In: Statistics and Probability

The death rate per 100,000 for lung cancer is 7 among non-smokers and 71 among smokers....

The death rate per 100,000 for lung cancer is 7 among non-smokers and 71 among smokers. The death rate per 100,000 for coronary thrombosis is 422 among non-smokers and 599 among smokers. The prevalence of smoking in the population is 55%.

a. What is the etiologic fraction of disease due to smoking among individuals with lung cancer? 0.90 for lung cancer and 0.29 for coronary thrombosis.

b. What is the etiologic fraction of disease due to smoking among individuals with coronary thrombosis?

Solutions

Expert Solution

Answer :

Given that :

Total lung cancer among non smokers = 7

Total lung cancer among smokers = 71

Total coronary thrombosis among non smokers = 422

Total coronary thrombosis among smokers = 599

a)Here we need to calculate etiologic fraction of disease due to smoking among individuals with lung cancer is :

Formula to calculate etiologic fraction =

Substitute the vallues in above formula,

etiologic fraction = (71 - 7) / 71

= 64 / 71

= 0.901

Etiologic fraction of disease due to smoking among individuals with lung cancer = 0.90

b)Here we need to calculate etiologic fraction of disease due to smoking among individuals with coronary thrombosis is :

Formula to calculate etiologic fraction =

Substitute the vallues in above formula,

etiologic fraction = (599 - 422) / 599

= 177 / 599

= 0.295

Etiologic fraction of disease due to smoking among individuals with coronary thrombosis = 0.295

orchestra answered 1 year ago
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