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': 'Burden of disease is given by - \nSelect and explain. \nA. Incidence, B. Crude death rate, C. Cause specific death rate, D. Proportional mortality rate', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Proportional mortality rate (ratio)\n\nProportional mortality rate measures the proportion of total death due to specific cause or proportion of deaths in a particular age group.\nIt is defined as "number of deaths due to a particular cause (or in specific age group) per 100 total deaths".\nIt is the \'simplest measure of estimating the burden of disease\' in the community.\nIt is a useful \'health Status indicator\'; indicates magnitude of preventable mortality.\nIt is used when population data is not available.\nIt does not indicate the risk of members of population contracting or dying from the disease.\n\nProportional mortality from TB = No. of deaths due to TB in a year / Total no. of deaths in that year x 100\nUnder 5 proportional mortality rate = No. of deaths under 5 years age / Total no. of deaths during the same period x 100', 'role': 'assistant'}]