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. 2017 Dec 2;11(2):236–245. doi: 10.1093/ckj/sfx134

Table 1.

Operationalized definitions of frailty [2, 4–8]

Phenotype model of physical frailty Cumulative Deficit Model of Frailty
Clinical syndrome involving at least three of the following:

  1. Unintentional weight loss

  2. Self-reported exhaustion

  3. Weakness

  4. Slow walking speed

  5. Low physical activity

 A Frailty Index score is calculated by totaling the number of deficits from a predetermined list of ≥ 30 clinical variables including a broad range of medical and psychological conditions and functional impairments.