Table 1.

Frailty measurement tools and cut points.

Tool	Variables Considered	Frailty Cut Point
CFS	Subjective 9-point scale	≥4 points out of 9
MFC	Slowness, weakness, weight loss, exhaustion, depression, low physical activity, cognitive impairment	≥3 of the 7 variables present
SPPB	5 m gait speed, balance tests, repeated chair stand test	≤9 points out of 12
FFI	25 separate variables (Table A1)	deficits/variables ≥0.25

CFS, Clinical Frailty Scale; MFC, Modified Fried Criteria; SPPB, Short Physical Performance Battery; FFI, Functional Frailty Index.