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Some Demographic Consequences of Changing Cohort Fertility Patterns: An Investigation Using the Gompertz Function

Frank T. Denton and Byron G. Spencer
Population Studies
Vol. 28, No. 2 (Jul., 1974), pp. 309-318
DOI: 10.2307/2173961
Stable URL: http://www.jstor.org/stable/2173961
Page Count: 10
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Some Demographic Consequences of Changing Cohort Fertility Patterns: An Investigation Using the Gompertz Function
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Abstract

In this paper are formulated some convenient summary measures of fertility patterns. These measures, which are based on the Gompertz function, are total lifetime fertility, median age of mothers at childbirth, and inter-quartile range of age of mothers at childbirth. Estimates of the parameters of Gompertz function, based on Canadian data, are used to derive, for each of the summary measures, values which reflect historical fertility experience, and thus give an impression about the range of realistic values for these measures. A simple model of demographic activity which includes the Gompertz function is also considered, and this model is used in computer simulation experiments to determine the macro-demographic effects of changes in each of the three summary measures.

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