please answer 18.

18) In questions 16 and 17: Are some populations with a similar age structure as the standard population? Why or why not?

16) You have calculated the crude and age-adjusted mortality rates for City A and City B, and obtained the following rates (per 1000 population).In bullets: Interpret these results. What can you say about age specific rates for these cities? (5 points).

Rate (per 1000) City A City B

Crude death rate 7.3 10.4

Age-adjusted death rate 10.2 10.3

17) You have calculated the crude and age-adjusted mortality rates for City C and City D, and obtained following rates (per 1000 population).In bullets: Interpret these results. What can you say about age specific rates in these cities? (5 points).

Rate (per 1000) City C City D

Crude death rate 8.1 8.0

Age-adjusted death rate 7.0 15.0