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 |