Table 1.

Canadian Study of Health and Aging Clinical Frailty Scale

Category	Category description
1	Very fit (energetic, motivated, exercise regularly)
2	Well (no active disease, less fit than category 1)
3	Well, with treated comorbid disease
4	Apparently vulnerable (not frankly dependent, disease symptoms, slowed up)
5	Mildly frail (limited dependence in IADL)
6	Moderately frail (help needed with ADL and IADL)
7	Severely frail (completely dependent in ADL, or terminally ill)

Abbreviations: IADL, instrumental activities of daily living; ADL, basic activities of daily living.