Fig. 2
From: How frail is frail in oncology studies? A scoping review
Distribution of frailty index cut-off points used to define frailty. The frailty index is a continuous measure between zero (least frail) and one (most frail). Here, the number of studies using different cut-off points to categorise adults with cancer as frail are highlighted. Significant variation in these frailty index cut-off points is evident