Epidemiology & Screening · NEET PG Preparation Community Medicine (PSM)
In a cohort study investigating the association between smoking and lung cancer, 50 out of 1,000 smokers develop lung cancer, while 5 out of 1,000 no…
Practice question from Epidemiology & Screening (NEET PG Preparation Community Medicine (PSM)), with the correct answer and a step-by-step solution.
medium · MCQ · Q-109A20
In a cohort study investigating the association between smoking and lung cancer, 50 out of 1,000 smokers develop lung cancer, while 5 out of 1,000 non-smokers develop lung cancer. What is the relative risk?
- A.2.5
- B.5.0
- C.10.0Correct answer
- D.50.0
Solution
Relative Risk (RR) is the ratio of the incidence of disease among exposed to the incidence among unexposed. Incidence in smokers = . Incidence in non-smokers = . RR = .
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