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Table 2 The area under the receiving operating characteristic (AUC) with 95 % confidence intervals for different versions of the frailty index (FI)

From: Age-related frailty and its association with biological markers of ageing

  AUC 95 % CI
FI-B 0.66 0.62–0.69
FI-B-21 0.68 0.62–0.73
FI-B-9 0.65 0.61–0.69
FI-B-NS 0.60 0.52–0.64
FI-CD 0.71 0.67–0.74
FI-CD + FI-B 0.75 0.71–0.78
FI-CD + FI-B + sex 0.77 0.74–0.81