Mortality measures 1. Life expectancy (1 average expected number of years to be lived from age x (typically from birth) by a particular population at a given time 2 Calculation based on the age-specific death rates Life expectancy is not influenced by the population age structure Prolonged Life expectancy is an important factor of population agIng. (5 Measure of population healthMortality measures 1. Life expectancy ① average expected number of years to be lived from age x (typically from birth) by a particular population at a given time. ② Calculation based on the age-specific death rates ③ Life expectancy is not influenced by the population age structure. ④ Prolonged Life expectancy is an important factor of population aging. ⑤ Measure of population health