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Life table" primarily refers to period life tables, as cohort life tables can only be constructed using data up to the current point, and distant projections for future mortality. Life tables can be constructed using projections of future mortality rates, but more often they are a snapshot of age-specific mortality rates in the recent past, and ...
A life table (or a mortality table) is a mathematical construction that shows the number of people alive (based on the assumptions used to build the table) at a given age. In addition to the number of lives remaining at each age, a mortality table typically provides various probabilities associated with the development of these values.
Ulpian's life table is an ancient Roman annuities table. It is known through a passage, originating from the jurist Aemilius Macer , preserved in edited form in Justinian 's Digest . The table appears to provide a rough outline of ancient Roman life expectancy .
It is computed by subtracting the probable duration of bed disability and inability to perform major activities from the life expectancy. The data for calculation is obtained from population surveys and period life table. The Sullivan's index collects mortality and disability data separately, and this data is almost often readily available. The ...
Life expectancy is also used in plant or animal ecology, [10] and in life tables (also known as actuarial tables). The concept of life expectancy may also be used in the context of manufactured objects, [11] though the related term [dubious – discuss] shelf life is commonly used for consumer products, and the terms "mean time to breakdown ...
The life table summarizes the events and the proportion surviving at each event time point. The columns in the life table have the following interpretation: time gives the time points at which events occur. n.risk is the number of subjects at risk immediately before the time point, t.
Only countries with populations over 50,000 are listed. Due to this criterion, the table does not include such countries as Monaco (LE 86.37 years, population 39,000), San Marino (LE 85.71 years, population 34,000), and Saint Barthélemy (LE 84.29 years, population 11,000). The values are rounded, all calculations were done on raw data.
Historically Japanese life expectancy statistics have been used as the standard for measuring premature death, as the Japanese have the longest life expectancies. [9] Other approaches have since emerged, include using national life tables for YLL calculations, or using the reference life table derived by the GBD study. [10] [11]