Description: We propose an age-shift model to modify the LC model and deal with the problem of parameters. The proposed method attains smaller estimation errors with respect to mean absolute percentage error or mean square error. We also apply the proposed age-shift model to the mortality rates of these four countries to evaluate the longevity risk in annuity products by measuring life expectancy.

Description: Presented at Living to 100 and Beyond symposium 2002. Discussion of two papers, 'Approaches and Experiences in Projecting Mortality Patterns for the Oldest Old' by Buettner and 'Using Dynamic Reliability in Estimating Mortality at Advanced Ages' by Lin. The first paper discusses the UN methodology for projecting mortality above age 80 and presents another approach for addressing the problem of table closing. The second paper suggests a new statistical model for fitting and estimation of mortality rates at advanced ages.