A new parametric model for fitting fertility curves.

Autor: Bermúdez S; Instituto de Estadística de Andalucía, Seville, Spain., Blanquero R, Hernández JA, Planelles J
Jazyk: angličtina
Zdroj: Population studies [Popul Stud (Camb)] 2012 Nov; Vol. 66 (3), pp. 297-310. Date of Electronic Publication: 2012 Jul 12.
DOI: 10.1080/00324728.2012.695802
Abstrakt: What is the optimum way of describing the age-specific fertility pattern by mathematical functions? We propose a parametric fitting model, based on a mixture of Weibull functions, which performs well for countries where the fertility curve shows a non-traditional pattern. We also consider a simplified version of this model with a reduced number of parameters that can be applied to fit fertility curves in countries where the fertility pattern exhibits a classical shape. To test the new model, fertility curves for a range of countries and years are fitted empirically. The results show that both versions of the new model outperform existing procedures in most cases.
Databáze: MEDLINE