Table 2.

Frailty assessment.

Study	Frailty
	Scale	Frailty statusa
Mira et al [50]	Barthel ADLb	Slightly impaired (prefrail)
Hägglund et al [54]	Short-Form 36 Physical	Slightly impaired (prefrail)
Rantz et al [22]	Gait speedc	Severely impaired (frail)
Adrait et al [23]; Nguyen et al [55]	Lawton-IADLd	Significantly impaired (frail)
Elston et al [14]	Gait speed	Slightly impaired (prefrail)
Tchalla et al [7]	Lawton-IADLe	Slightly impaired (prefrail)
Schoon et al [53]	Fried Frailty Score	18.6% of participants frail at baseline

^aCategorized according to a method proposed by Brefka et al [41], except for Schoon et al [53].

^bADL: activities of daily living.

^cCollection of ADL and IADL also mentioned with no data reported but provided by the authors upon request.

^dIADL: instrumental activities of daily living.

^eTimed-Up-and-Go test also performed with inconclusive results.