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Life Tables

In: Business and Management

Submitted By labooo
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LIFE TABLES
Life tables are statistical tools constructed for measuring the mortality of a population. They provide a description of the most important aspects of the state of human mortality. They try to show, for a person at a particular age, what the probability is that they die before their next birthday.
TYPES OF LIFE TABLES
Life tables have been classified into several types:
1. Conventional/period/cross-sectional life tables- these tables are based on age specific mortality rates for a specific period of time for the whole population. These rates are derived from deaths occurring over a selected period of time and the population at the mid-point of this period, a period of one year is mostly considered.
2. Generation/cohort life tables- these are based on a cohort throughout its life. We should remember a cohort is a group of individuals all born during the same time interval. The table shows the probability of death of people from a given cohort over the course of their lifetime.
3. Complete life tables- these are tables in which the mortality experience is considered in each single year throughout the life span. It is a more detailed method of measuring mortality since these tables are constructed on yearly basis.
4. Abridged life tables- are tables in which the measures are given for age groups and not for every single year of age. Its values are mostly in general terms and it is used to simplify the complete life tables whose construction is very laborious.
USES OF LIFE TABLES:
1. Population projections- one of the main uses of life tables is to project population at sometime in future based on the age distribution existing in the population. For these projections the data of nLx is used.
2. They are also used to calculate the net reproduction rate.
3. They are important instruments for analysis of population dynamics and age structure...

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