Description: This paper describes risk-factor-dependent multiple decrements and actuarial cost functions as a general compartment model, a discrete time and discrete state stochastic model of morbidity and mortality processes. For large numbers of risk factors, the model is extended to its natural continuous time and state form. From Transactions of Society of Actuaries 1991, Vol. 43.

Description: This section presents multiple book reviews and summaries of recent publications. Reviews: 'Social Security' by Myers, 'Report on Actuarial Principles and Practical Problems with Regard to Nonforfeiture Requirements' by Society of Actuaries, 'Mortality and Morbidity in the US' by Erhardt and Berlin, 'The Fifty-Second Annual Report of the Board of Actuaries of the Civil Service Retirement System' by US Government, 'Health Service Information in the US Today' by Murnaghan, 'Financial Problems Confront the Federal OASI and DI Trust Funds' by Staats, 'Public Employee Pension Funds' by Tilove, '1976 Annual Reports of the Board of Trustees of the Federal OASDI Trust Funds...' by US Congress, 'Report of the Consultant Panel on Social Security to the US Congressional Research Service' by US Government, 'Crime by Computer' by Parker, 'Reports of Consultants on Actuarial and Definitional Aspects of Social Security Disability Insurance' by US Government, 'Social Security: The Fraud in Your Future' by Shore, '1972 Lifetime Earnings by Age, Sex, Race and Education Level' by Social Security Administration. Digests also included.