<prompt> Which of the following is used to compare the death rates of two different populations?Crude death rateAge specific death rateAge standardized death ratePropoional moality rate  <response>: If we want to compare the death rates of two populations with different age composition, the crude death rate is not a right yardstick.Age standardization removes the confounding effect of different age structures and yields a single standardized or adjusted rateref:park;s textbook,ed23,pg 58 