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': 'The rate adjusted to allow for the age distribution of the population is: \nSelect and explain. \nA. Perinatal mortality rate, B. Crude mortality rate, C. Fertility rate, D. Age standardized mortality rate', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' ie Age standardized mortality rate (Ref: Park 20/e, p 55 (18/e, p53); Repeat Nov03, Q27)Age standardized mortality rate allows to remove the confounding effect of different age structures, while comparing the death rates of two populations.", 'role': 'assistant'}]