A new parametric model for fitting fertility curves

S. Bermúdez, R. Blanquero, J. A. Hernández and J. Planelles

Population Studies, 2012, vol. 66, issue 3, 297-310

Abstract: 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.

Date: 2012
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DOI: 10.1080/00324728.2012.695802

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