Formerly called Dynamics of Population Aging in ECE Countries. Assembles a set of cross-nationally comparable microdata samples for Economic Commission for Europe (ECE) countries based on the 1990 national population and housing censuses in countries of Europe and North America to study the social and economic conditions of older persons. These samples have been designed to allow research on a wide range of issues related to aging, as well as on other social phenomena. Includes Bulgaria, Czech Republic, Estonia, Finland, Latvia, Lithuania, Romania, and Turkey.