Table 7-1 provides an example of an abridged life table.Īge interval, x to x+n: Age interval between exact ages for each row of the life table The census for year 2000 would be used for the base population. For example, a country or state would collect age-specific death rates for 1999, 2000, and 2001. In many cases, the life tables are prepared every 10 years. In many countries, life tables are based on an average of age-specific death rates for a 3-year time period, generally around a census taking. There are two types of current life tables: It traces the cohort of newborn babies throughout their lifetime under the assumption that they are subject to the age-specific mortality rates of a region or country. Current or period life tables Period life tables are based on the mortality experience of a hypothetical cohort of newborn babies, usually 100,000 newborns, who are subject to the age-specific mortality rates on which the table is based. In most cases, generation life tables are used to study historic periods. For example, demographers use the table to trace the mortality experiences of a cohort or group of individuals born in 1910 and record the mortality experiences of each member until the last one dies. The cohort begins at birth and their mortality experiences are recorded through the death of the last member of that cohort. A generation or cohort life table is a life history of the mortality experiences of an actual cohort of individuals.
Life tables Life tables are used to measure mortality, survivorship, and the life expectancy of a population at varying ages.
If survival rates or life tables are not available, the rates may be computed from a model life table or census data. In many cases, planners can obtain survival rates from a national or regional statistics office, or from life tables. Survival rates are derived from life tables or census data, and are used to calculate the number of people that will be alive in the future.
Survival rates are used extensively in demographic projection techniques. Community-Based Indicators for HIV Programs.Family Planning and Reproductive Health Indicators Database.Results-Based Financing Indicator Compendium.Health Information Systems Strengthening Resource Center.Newsroom: News, Blogs, Podcasts, Videos.
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