This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Classification, Coho Study, Subject name: Social & Preventive Medicine
[{'content': '"Risk ratio" is utilized to calculate :- \nSelect and explain. \nA. Relative risk, B. Attributable risk, C. Population attributable risk, D. Odds ratio', 'role': 'user'}, {'content': 'Answer: A \nExplanation: - Risk ratio is the ratio of incidence of disease in exposed to incidence of disease in non-exposed. - It is utilized to calculate relative risk. EXTRA EDGE: - R.R. = Ie / Ine - A.R. = x 100 - P.A.R. = x 100', 'role': 'assistant'}]