Fig. 1From: Age-related frailty and its association with biological markers of ageingHistograms of the a Clinical Deficit Frailty Index (FI-CD) and b Biomarker Frailty Index (FI-B), and the best fit gamma density functions (solid lines) with the parameters of shape and scale 18.77 and 0.02 for FI-CD and 3.24 and 0.07 for FI-B, respectivelyBack to article page