This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
[{'content': 'Attributable risk is the impoant parameter for:- \nSelect and explain. \nA. Clinicians, B. Epidemiologists, C. Public health program managers, D. Microbiologists', 'role': 'user'}, {'content': 'Answer: B \nExplanation: AR Difference in incidence rates of disease (or death) b/w an exposed group & non-exposed group. It indicates to what extent the disease under study can be attributed to the exposure. Aka "risk difference"/ Excess risk/ Absolute risk. Used by epidemiologists. Attributable risk is often expressed as a percent. This is given by the formula :Incidence of disease rate among exposed - incidence of disease rate among non-exposed--- ---------- -------------------------------------------------------------------------------------- xlOOIncidence rate among exposed - RR - used by Clinicians - PAR -useful for National health programmes and policies', 'role': 'assistant'}]