What is the relationship between age-specific mortality and age-specific survivorship?
A) age-specific mortality is the proportion of individuals alive at the start of an age interval; age-specific survivorship is the proportion that die before the start of the next interval
B) age-specific survivorship is the proportion of individuals alive at the start of an age interval that die during the age interval; age-specific mortality is the proportion that survive until the start of the next interval
C) the sum of age-specific mortality and age-specific survivorship always equals 1
D) the sum of age-specific mortality and age-specific survivorship is always less than 1
E) age-specific survivorship is always greater than 1

Question

Quizplus · Accepted Answer

Age-specific mortality refers to the proportion of individuals that die within a given age interval, while age-specific survivorship refers to the proportion of individuals that survive to the beginning of the next age interval. Since these two metrics account for all individuals in the population (those that die and those that survive), their sum always equals 1.

What Is the Relationship Between Age-Specific Mortality and Age-Specific Survivorship