discuss the differential of mortality?
Answers
Explanation:
Differential mortality. Specific death rates may be used to study differential mortality 1 or mortality differences 1 between groups, and reference is made to an excess mortality 2 of one group as compared with another, or with the rest of the population. It is measured by an excess mortality index
Answer:
The study of mortality deals with the effect of death on the population. The general terms mortality rate or death rate encompass all the rates (133-4) which measure the frequency of deaths. Where the expression death rate is used without any qualifying adjective the crude death rate is usually meant (cf. 136-8 for a general discussion of crude rates). This is generally an annual rate and consists of the ratio of the annual number of deaths occurring during a calendar year to the number exposed to the risk of dying during the same period. This number is equivalent to the mean population or average population for the period, and the population at the mid-point of the period can usually be substituted for the average population without appreciable error, if the size of the population is changing fairly uniformly. If the mortality of a sub-population (101-6) only is studied, we speak of specific death rates (134-6) among which sex-age-specific death rates are the most common. Age specific death rates without distinction of sex are also used on occasion.