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Biomedical subjects

A J Coale

Publications and source records attributed to A J Coale.

36 records · Page 2Linked to original sources
PubMedDate not supplied

Estimation of expectation of life at advanced ages.

Comments are presented on a formula developed by Enzo Lombardo "for the relation between the death rate above age a and the growth rate above age a (where a is an advanced age, above 55 or 60) on the one hand, and the expectation of life at age a on the other." Estimates obtained by this method are compared with results obtained by the method of S. Horiuchi and A. J. Coale. It is concluded that "the formula proposed by Horiuchi and [Coale] produces much more accurate estimates, with a maximum error of 0.03 years." The author describes a way in which Lombardo's method "can be modified to give estimates of precision comparable to the Horiuchi and Coale estimates." (summary in FRE, ITA)

Adult↗
PubMedDate not supplied

Estimation of the number of persons at advanced ages from the number of deaths at each age in the given year and adjacent years.

"In this article the rate of increase of the population at each age is estimated from the rate of increase in the number of deaths, and in this way a close approximation of the number of older persons at each age is derived from the accurately recorded number of deaths in three consecutive years centered on the year in question. The method is illustrated by applying it to Sweden, England and Wales, and Italy." (SUMMARY IN FRE AND ITA)

Age Distribution↗