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: Dental
[{'content': 'Attempts to quantitate clinical conditions on a graduated scale, thereby facilitating comparison among populations examined by the same criteria and methods is: \nSelect and explain. \nA. Indices, B. Survey, C. Biostatistics, D. Analysis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: "A numerical value describing the relative status of a population on a graduated scale with definite upper and lower limits, which is designed to permit and facilitate comparison with other populations classified by the same criteria and methods". - Russell A.L.\xa0\n"Epidemiologic indices are attempts to quantitate clinical conditions on a graduated scale, thereby facilitating comparison among populations examined by the same criteria and methods"\xa0- Irving Glickman.', 'role': 'assistant'}]