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| Preston-Coale Method× | Brass Growth Balance Method× | |
|---|---|---|
| Πεδίο | Δημογραφία | Δημογραφία |
| Οικογένεια | Process / pipeline | Process / pipeline |
| Έτος προέλευσης≠ | 1982 | 1975 |
| Δημιουργός≠ | Samuel H. Preston & Ansley J. Coale | William Brass |
| Τύπος≠ | Death distribution method that reconstructs a population from its deaths to estimate registration completeness | Death distribution method for estimating the completeness of death registration |
| Θεμελιώδης πηγή≠ | Preston, S. H., & Coale, A. J. (1982). Age structure, growth, attrition, and accession: a new synthesis. Population Index, 48(2), 217–259. DOI ↗ | Preston, S. H., Heuveline, P., & Guillot, M. (2001). Demography: Measuring and Modeling Population Processes. Blackwell. ISBN: 9781557864512 |
| Εναλλακτικές ονομασίες | Synthetic extinct generations method, SEG method, Preston-Coale death distribution method, Preston-Coale Yöntemi | Brass growth balance equation, GBM, Death registration completeness estimation, Brass Büyüme Dengesi Yöntemi |
| Συναφείς | 4 | 4 |
| Σύνοψη≠ | 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. | The Brass growth balance method estimates how complete a country's death registration is when vital statistics are incomplete but a census age distribution exists. Developed by William Brass in 1975, it rests on a simple demographic accounting identity applied above every age: in a stable population the rate at which people enter an open-ended age group must equal the population growth rate plus the rate at which they leave it by dying. Plotting the entry rate against the observed death rate above each age yields a straight line whose slope reveals the fraction of deaths actually registered. |
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