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In a prospective study, Data collected extensive information on incidence of coronary heart disease (CHD) among smoker and non-smoker individuals.
The table below summarizes the results
Risk factor
Cases of CHD
Non cases of CHD
Total
Smoker
84
2916
3000
Non smoker
87
4913
5000
(a) What is the absolute risk of CHD among smokers?
(b) What is the relative risk of CHD when men smoke extensively compared to men who do not smoke?
(c) Interpret this relative risk.
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