Duke Longitudinal Studies
definition: The Duke Longitudinal Studies of Aging, initiated in 1955, consist of two separate studies. The first longitudinal study began in 1955 with 271 persons 60 to 90 years of age. [Source: Encyclopedia of Health & Aging; Duke Longitudinal Studies]
broader: studies of aging
type: Concept

concepts
type: Collection
type: ConceptGroup
member: Duke Longitudinal Studies

studies of aging
type: Concept
narrower: Duke Longitudinal Studies