Description: Presented at Living to 100 symposium, January 2002. This is a report of a study in which the Cox proportional hazard model, a widely used survival analysis tool, was applied to profiling the mortality of an insured advanced-age population. The data was derived from 14 US insurers. This data represents policies issued between 01/01/1997 and 12/31/2000 to policyholders of age 60 or older. The major study results include measures of mortality, variations by selected risk factors, estimated mortality experience of the underlying population, and a comparison of mortality experience estimated by direct calculation, the Society of Actuaries’ SOA 1990-95 mortality study, and our extended Cox modeling technique.