Volume 21 - Article 25 | Pages 759–764  

The metastable birth trajectory

By Robert Schoen

This article is part of the ongoing Special Collection 8 "Formal Relationships"

Abstract

The metastable model generalizes the stable population model by allowing net maternity to change exponentially over age and time. As a result, the metastable model generates an exponentially quadratic birth trajectory, which is characterized by a constant proportion of births by age of mother. The metastable model is well suited to analyzing steady fertility declines and transitions between two regimes of fixed vital rates.

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