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Global Projections of Household Numbers Using Age Determined Ratios

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  • Victor E. Jennings
  • Conrad W. Lloyd-Smith
  • Duncan S. Ironmonger

Abstract

A new method based upon age determined population ratios is described and used to estimate household population intensities (households per person). Using an additive and a bounded model household projections are given to 2050 for the world and to 2030 for seven fertility transition subgroups (cohorts) of the countries of the world. Based upon United Nations 2002 Revision data, from an estimated 1.56 billion households at 2000, household growth to 2030 is projected to be an additional 1.1 billion households, whether population increase is 1.3 billion persons under the United Nations low fertility variant or 2.7 billion persons under the high fertility variant. At that date over one third of all households are projected to be Chinese or Indian. By 2050 it is projected that there will be 3.3 billion households with a 95 per cent confidence interval on modelling error only of ± 0.5 billion. This compares with 3.2 billion in the Habitat: Global Report on Human Settlements 1996. The apparent similarity of total household growth under various scenarios conceals a wide range in the growth of household intensities across fertility transition cohorts. It is suggested that models, projections and error be reviewed biennially and that household and population projections be produced jointly.

Suggested Citation

  • Victor E. Jennings & Conrad W. Lloyd-Smith & Duncan S. Ironmonger, 2004. "Global Projections of Household Numbers Using Age Determined Ratios," Department of Economics - Working Papers Series 914, The University of Melbourne.
  • Handle: RePEc:mlb:wpaper:914
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    File URL: http://www.economics.unimelb.edu.au/downloads/wpapers-04/914.pdf
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    References listed on IDEAS

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    1. Harry Haupt & Walter Oberhofer & Thomas Reichsthaler, 2003. "A Varying-Coefficient Approach To Estimation And Extrapolation Of Household Size," Mathematical Population Studies, Taylor & Francis Journals, vol. 10(4), pages 249-273.
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    Cited by:

    1. Cristiano Marini & Alessandra Nuccitelli, 2009. "Prime esperienze nel recupero di informazioni sulla mortalità neonatale mediante integrazione di dati amministrativi," Rivista di statistica ufficiale, ISTAT - Italian National Institute of Statistics - (Rome, ITALY), vol. 11(1), pages 57-84, September.
    2. Carlo Maccheroni & Tiziana Barugola, 2009. "How Many Households? A Comparison of Scenarios in the European Union: from Europop2004 to Europop2008," Rivista di statistica ufficiale, ISTAT - Italian National Institute of Statistics - (Rome, ITALY), vol. 11(1), pages 39-55, September.
    3. Claudio Ceccarelli & Andrea Cutillo & Davide Di Laurea, 2009. "Metodologie per la stima degli affitti figurativi ed impatto sulla distribuzione del reddito," Rivista di statistica ufficiale, ISTAT - Italian National Institute of Statistics - (Rome, ITALY), vol. 11(1), pages 17-38, September.
    4. Carolina Corea, 2009. "The deflation of the annual household final consumption expenditure in Italian National Accounts: the chain-linking approach," Rivista di statistica ufficiale, ISTAT - Italian National Institute of Statistics - (Rome, ITALY), vol. 11(1), pages 5-15, September.

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    Keywords

    Household projections; world; age ratios; fertility;

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