This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
[{'content': 'Study of time, place and person is called as - \nSelect and explain. \nA. Experimental epidemiology, B. Analytical epidemiology, C. Descriptive epidemiology, D. Randomized controlled trial', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Descriptive epidemiology (Descriptive studies) \n\nDescriptive studies are usually the first phase of an epidemiological investigation.\nThese studies are concerned with observing the distribution of disease and identifying the characteristics with which the disease in question seems to be associated.\n\nProcedures in Descriptive Studies\n1.\xa0Defining the population to be studied\n2.\xa0Defining the disease under study\n3.\xa0\xa0Describing the disease by\n\nTime\nPlace\nPerson\n\n4.\xa0Measurement of disease\n5.\xa0Comparing with known indices\n6.\xa0Formulation of an etiological hypothesis\n\nDescriptive studies are used to formulate etiological hypothesis.', 'role': 'assistant'}]