RESEARCH ARTICLE Frailty index of deficit acc g

Full list of author information is available at the end of the articleBackground Frailty is a state of vulnerability and is highly associated with age [1,2]. Frailty has been described as: ‘Frailty is a dynamic state affecting an individual who experiences losses in one or more domains of human functioning (physical, psychological, social) that are caused by the influence of a range of variables and which increases the risk of adverse outcomes ’ [3]. Frailty is increasing in our aging population, with an overall prevalence of 10.7 % in community-dwellers aged 65 years and older as reported in a systematic review [4]. Furthermore, it is estimated that 25-50 % of adults ≥85 years are frail [2]. Frailty is strongly related to an increased risk of adverse outcomes, including institutionalization, disability and death [2,5]. Ideally, frailty models should have both discriminative and evaluative properties, and should reliably reflect th