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A comparison of different methods for decomposition of changes in expectation of life at birth and differentials in life expectancy at birth

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  • K. Murthy Ponnapalli

    (International Institute for Population Sciences (IIPS))

Abstract

Several methods were proposed to decompose the difference between two life expectancies at birth into the contribution by different age groups. In this study an attempt has been made to compare different methods with that of Chandra Sekar (1949) method. The methodologies suggested by Arriaga, Lopez and Ruzicka and Pollard have been extended. It is shown that all the three methods and also Chandra Sekar method in their modified (symmetrical) form will be seen to produce the same result as that of United Nations, Pollard, Andreev and Pressat. Finally it is suggested to use symmetric formulae of the above methods because the percent contribution of total of the interaction terms to the difference in the life expectancy at birth is observed to be very negligible.

Suggested Citation

  • K. Murthy Ponnapalli, 2005. "A comparison of different methods for decomposition of changes in expectation of life at birth and differentials in life expectancy at birth," Demographic Research, Max Planck Institute for Demographic Research, Rostock, Germany, vol. 12(7), pages 141-172, April.
  • Handle: RePEc:dem:demres:v:12:y:2005:i:7
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    File URL: https://www.demographic-research.org/volumes/vol12/7/12-7.pdf
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    References listed on IDEAS

    as
    1. Robert Retherford, 1972. "Tobacco smoking and the sex mortality differential," Demography, Springer;Population Association of America (PAA), vol. 9(2), pages 203-215, May.
    2. Marc Luy, 2003. "Causes of Male Excess Mortality: Insights from Cloistered Populations," Population and Development Review, The Population Council, Inc., vol. 29(4), pages 647-676.
    3. J. Pollard, 1988. "On the decomposition of changes in expectation of life and differentials in life expectancy," Demography, Springer;Population Association of America (PAA), vol. 25(2), pages 265-276, May.
    Full references (including those not matched with items on IDEAS)

    More about this item

    Keywords

    decomposition; direct effect; indirect effect; interaction effect; life expectancy; life expectancy at birth; main effect; symmetrical; total effect;

    JEL classification:

    • J1 - Labor and Demographic Economics - - Demographic Economics
    • Z0 - Other Special Topics - - General

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