On gamma-Gompertz life expectancy

Fredy Castellares, Silvio C. Patrício and Artur J. Lemonte

Statistics & Probability Letters, 2020, vol. 165, issue C

Abstract: A closed-form expression for the remaining life expectancy based on the gamma-Gompertz model has been derived recently in the literature. However, the closed-form expression available to users is not correct. We provide, therefore, a valid and correct expression for the life expectancy at age x by using elementary calculus. We also consider a comparative numerical study by using real data to confirm that the formula we provide works properly.

Keywords: Hypergeometric function; Life expectancy; Mean residual life; Mortality (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (3)

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DOI: 10.1016/j.spl.2020.108832

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