title: [The concept of vitality and the Ries biological index].
abstract: Using the concept of vitality a relation between the inverse vitality and the Ries biological index is derived. It is shown that the parameter beta of the model I can be calculated from the exponent alpha of the biological index.
mesh_terms: D000368:Aged; D000375:Aging; D001835:Body Weight; D006801:Humans; D008433:Mathematics; D008962:Models, Theoretical; D011788:Quality of Life
vernacular_title: Vitalitätskonzept und biologischer Index nach Ries.