Volume 19 - Article 46 | Pages 1635-1662

Sources of error and bias in methods of fertility estimation contingent on the P/F ratio in a time of declining fertility and rising mortality

By Tom Moultrie, Rob Dorrington

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Date received:02 Apr 2008
Date published:16 Sep 2008
Word count:6228
Keywords:AIDS/HIV, developing countries, estimation, fertility, indirect techniques
DOI:10.4054/DemRes.2008.19.46
 

Abstract

Almost all commonly used indirect fertility estimation methods rely on the P/F ratio. As originally conceived, the ratio compares cumulated cohort fertility with cumulated period fertility on the basis of three, fairly strong, assumptions. The intention of this paper is to interrogate what happens to the results produced by the P/F ratio method as each of these three assumptions is violated, first independently, and then concurrently. These investigations are important given the generally poor quality of census data collected in developing countries, particularly sub-Saharan Africa, and the radically altering demographic conditions associated with a generalised HIV/AIDS epidemic in the region.

Author's Affiliation

Tom Moultrie - University of Cape Town, South Africa [Email]
Rob Dorrington - University of Cape Town, South Africa [Email]

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» Dispensing with marriage: Marital and partnership trends in rural KwaZulu-Natal, South Africa 2000-2006
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» Modelling the demographic impact of HIV/AIDS in South Africa and the likely impact of interventions
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