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': 'The incidence of carcinoma cervix in women with multiple sexual paners is 5 times the incidence seen in those with a single paner. Based on this, what is the attributable risk? \nSelect and explain. \nA. 20%, B. 40%, C. 50%, D. 80%', 'role': 'user'}, {'content': "Answer: D \nExplanation: - If the incidence of carcinoma cervix in those with single paner is 'I' , then the incidence in those with multiple sexual paners will be 5 'I'. - Now attributable risk = (Incidence in exposed-Incidence in non-exposed/Incidence in exposed ) X 100 = (5I-I / 5I) X 100 = (4/5) X 100 = 80%.", 'role': 'assistant'}]