Abstract
Following the worldwide trend of population ageing, the number of older adults in Russia is increas- ing. The population of older adults is highly heterogeneous. Some people live to old age in good health and retain the ability to be independent and active participants of society, while others experience a reduction in physical and cognitive functions and lose their ability to live independently. This group of older adults needs additional assistance leading to increased financial costs due to their treatment and follow up. The concept of frailty was proposed as a potential predictive tool for this population of older adults. The aim of this study was to present different frailty models and history of development of the frailty concept.
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