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Prospective Longevity Risk Analysis

Published online by Cambridge University Press:  10 June 2011

G. Woo ,
C. J. Martin ,
C. Hornsby  and
A. W. Coburn
G. Woo
Affiliation:
Risk Management Solutions, 30 Monument Street, London EC3R 8NB, U.K. Tel: +44 (0) 20 7444 7701; E-mail: Gordon.Woo@rms.com
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Abstract

Mortality improvement has traditionally been analysed using an array of statistical methods, and extrapolated to make actuarial projections. This paper presents a forward-looking approach to longevity risk analysis which is based on stochastic modelling of the underlying causes of mortality improvement, due to changes in lifestyle, health environment, and advances in medical science. The rationale for this approach is similar to that adopted for modelling other types of dynamic insurance risk, e.g. natural catastrophes, where risk analysts construct a stochastic ensemble of events that might happen in the future, rather than rely on a retrospective analysis of the non-stationary and comparatively brief historical record.

Another feature of prospective longevity risk analysis, which is shared with catastrophe risk modelling, is the objective of capturing vulnerability data at a high resolution, to maximise the benefit of detailed modelling capability down to individual risk factor level. Already, the use by insurers of postcode data for U.K. flood risk assessment has carried over to U.K. mortality assessment. Powered by fast numerical computation and parameterised with high quality geographical data, hydrological models of flood risk have superseded the traditional statistical insurance loss models. A decade later, medically-motivated computational models of mortality risk can be expected to gain increasing prominence in longevity risk management.

Keywords

Longevity RiskMortality ImprovementMedicineGeroscienceCatastrophe Modelling
Type
Sessional meetings: papers and abstracts of discussions
Information
British Actuarial Journal , Volume 15 , Issue S1 , 2009 , pp. 235 - 247
Copyright
Copyright © Institute and Faculty of Actuaries 2009

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