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| Coale-Demeny Model Life Tables× | Preston-Coale Method× | |
|---|---|---|
| Fagområde | Demografi | Demografi |
| Familie≠ | Survival analysis | Process / pipeline |
| Oprindelsesår≠ | 1966 | 1982 |
| Ophavsperson≠ | Ansley J. Coale & Paul Demeny | Samuel H. Preston & Ansley J. Coale |
| Type≠ | Empirical system of standard age patterns of mortality | Death distribution method that reconstructs a population from its deaths to estimate registration completeness |
| Oprindelig kilde≠ | Coale, A. J., Demeny, P., & Vaughan, B. (1983). Regional Model Life Tables and Stable Populations (2nd ed.). Academic Press, New York. ISBN: 9780121770808 | Preston, S. H., & Coale, A. J. (1982). Age structure, growth, attrition, and accession: a new synthesis. Population Index, 48(2), 217–259. DOI ↗ |
| Aliasser≠ | Coale-Demeny Life Tables, Regional Model Life Tables, Coale-Demeny System | Synthetic extinct generations method, SEG method, Preston-Coale death distribution method, Preston-Coale Yöntemi |
| Relaterede | 4 | 4 |
| Resumé≠ | The Coale-Demeny regional model life tables are a system of standard age patterns of mortality, distilled from hundreds of empirical life tables into four regional families — North, South, East, and West — each indexed by a mortality level. Given only a single summary of mortality, such as life expectancy at birth or a child-survival measure, the system supplies a complete, internally consistent age schedule of death rates. For decades they have been the default tool for inferring full mortality patterns in populations with incomplete or unreliable death data, especially in developing countries and historical demography. | The Preston-Coale method, also called the synthetic extinct generations method, estimates the completeness of death registration by rebuilding a population from the very deaths it records. Introduced by Samuel Preston and Ansley Coale in 1982, it uses the variable-r relations of a non-stable population to project each age group's future deaths forward, growth-adjust them, and accumulate them into the number of people who must currently be alive at each age. Comparing this implied population with the observed census count reveals what fraction of deaths the vital system actually captures. |
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