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Table 2 The clinical frailty scale (CFS)

From: Frailty and mortality among dialysis patients

CFS score Interpretation
1 Very fit: robust, active, energetic, motivated, and fit; fittest in their age group
2 Well: without active disease but not as fit as those in category 1
3 Well: with treated comorbid disease
4 Apparently vulnerable: not dependent but has symptoms from comorbid disease (such as being slowed up)
5 Mildly frail: limited dependence on others for instrumental activities of daily living
6 Moderately frail: help is needed for instrumental activities of daily living and activities of daily living
7 Severely frail: completely dependent on others for instrumental activities of daily living and activities of daily living or terminally ill
8 Very severely frail: completely dependent, approaching the end of life. Typically, they could not recover even from a minor illness.
9 Terminally ill: approaching the end of life. This category applies to people with a life expectancy <6 months, who are not otherwise evidently frail.