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Table 3 Reproducibility properties of unchanged patients at three months follow-up measurement

From: Reproducibility and responsiveness of the Frailty Index and Frailty Phenotype in older hospitalized patients

Health anchor (n = 74)

Instrument

ICC (95 % CI)

SEM

SEM%a

SDC

SDC%a

FI

0.85 (0.76; 0.91)

0.05

5 %

0.13

13 %

FP

0.65 (0.49; 0.77)

0.66

13 %

1.84

37 %

Functioning anchor (n = 80)

Instrument

ICC (95 % CI)

SEM

SEM%a

SDC

SDC%a

FI

0.84 (0.77; 0.90)

0.06

6 %

0.16

16 %

FP

0.77 (0.65; 0.84)

0.56

11 %

1.56

31 %

  1. Notes: Intraclass correlation coefficient for agreement using a 2 way mixed effect model. ICC Intraclass Correlation Coefficient, FI Frailty Index; FP Frailty Phenotype; SDC smallest detectable change; SEM standard error of measurement.
  2. a. SEM% and SDC% are SEM and SDC expressed in percentages of the continuous score of the instrument