Academic Journal
A mortality model based on a mixture distribution function.
| Τίτλος: | A mortality model based on a mixture distribution function. |
|---|---|
| Συγγραφείς: | Mazzuco, Stefano1 (AUTHOR), Scarpa, Bruno1 (AUTHOR), Zanotto, Lucia1 (AUTHOR) |
| Πηγή: | Population Studies. Jul2018, Vol. 72 Issue 2, p191-200. 10p. |
| Θεματικοί όροι: | *Mortality -- Mathematical models, *Gaussian distribution, Death rate, Mortality, Mixture distributions (Probability theory) |
| Περίληψη: | A new mortality model based on a mixture distribution function is proposed. We mix a half-normal distribution with a generalization of the skew-normal distribution. As a result, we get a six-parameter distribution function that has a good fit with a wide variety of mortality patterns. This mixture model is fitted to several mortality data schedules and compared with the Siler (five-parameter) and Heligman- Pollard (eight-parameter) models. Our proposal serves as a convenient compromise between the Heligman-Pollard model (which ensures a good fit with data but is often overparameterized) and the Siler model (which is more compact but fails to capture 'accident humps'). [ABSTRACT FROM AUTHOR] |
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