Description: It is believed that exponential growth of mortality with age (Gompertz law) is followed by a period of deceleration, with slower rates of mortality increase at older ages. We compared the performance (goodness-of-fit) of two competing models-the Gompertz model and the logistic (Kannisto) model using data for 22 birth cohorts of U.S. men and women in the age interval 80-105 years. In all cases the Gompertz model fits mortality data significantly better than the Kannisto model. Another approach to study mortality patterns at advanced ages is based on Life table Aging Rate (LAR). It was found that for all studied 24 single-year birth cohorts LAR does not change significantly with age in the age interval 80-100 years suggesting the validity of Gompertz law. These results suggest that mortality deceleration at advanced ages is not a universal phenomenon, and human survival follows the Gompertz law up to very old ages.

Description: The Society of Actuaries' Group Annuity Experience Committee has completed this experience update, which presents the 2015 through 2016 calendar year experience of retired individuals in the United States who are covered under group pension contracts. This update compares these most recent two years of available experience to the 2011-14 period and analyzes how the recent data affects aggregate annual mortality improvement in the group annuity experience data since 2007.

Description: View the Archive Spring 2017: Group and Health Core Exam U.S.

Description: A plain-language, high-level explanation of employer withdrawal liability issues, including how they grew to be large and barriers to their collection.

Description: This report estimates sex-specific trends in HIPAA ADL disability between 1984 and 2004 using the National Long Term Care Survey (NLTCS); estimates age-standardized 20-year changes in ADL and cognitive impairment (CI) among the U.S. elderly using the HIPAA CI trigger; estimates the joint distribution of cognitive impairment (CI) and ADL disability among aged Medicare enrollees using the HIPAA disability triggers.

Description: This report represents the second in a series of studies conducted jointly by LIMRA International and the Society of Actuaries Long-Term Care Experience Committee and focuses on recent long-term care insurance industry persistency results. The study examines persistency experience by reporting on changes in both voluntary lapse and total termination activity for all participating companies during calendar years 2005 through 2007.

Description: This web page describes a report that presents results for industry long-term care insurance persistency.

Description: The Society of Actuaries' Retirement Plans Experience Committee (RPEC) has released the final report of the Pub-2010 Public Retirement Plans Mortality Tables. The primary focus of this study was a comprehensive review of recent mortality experience of public retirement plans in the United States.

Description: The Individual Annuity Experience Committee (IAEC) of the Society of Actuaries Research Institute has conducted an experience study of individual deferred annuities, covering calendar years 2011 through 2015. For purposes of this study, deferred annuities refer to annuity products which provide an account value and, thus, exclude deferred income annuities.

Description: As results emerged showing the influence of COVID-19 on recent mortality, the Society of Actuaries Research Institute’s Mortality and Longevity Strategic Research Program Steering Committee (MLPSC) began to ponder what it means for the future. Was the coronavirus pandemic just a temporary shock to U.S. mortality with mortality quickly returning to prepandemic levels upon its conclusion or a lingering factor in future U.S. mortality from the potential occurrence of new coronavirus variants, post-COVID-19 conditions (“long COVID”), deferral of needed health care treatment, a fatigued health care system and other elements? Only time will provide the answers to these questions.