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Table 5 Comparison of the diagnostic power of the measurement methods

From: Bioimpedance spectroscopy for swelling evaluation following total knee arthroplasty: a validation study

Diagnostic power comparison

Stage

Variable

AUC [95% IC]

Threshold

Sensitivity (%)

Specificity (%)

D2

BIS R0

0.99* [0.98 - 1.00]

13.4

0.96

0.96

Volume

0.84* [0.72 - 0.96]

6.1

0.83

0.79

Circumference

0.91* [0.81 - 1.00]

5.6

0.92

0.83

D8

BIS R0

1.00* [0.99 - 1.00]

13.8

1

0.96

Volume

0.92* [0.84 - 1.00]

7.7

0.92

0.92

Circumference

0.95* [0.90 - 1.00]

5.8

0.96

0.88

  1. Legends = AUC: area under the curve; [95% IC]: 95% confidence interval; *: P < 0.01; BIS R0: Bioimpedance spectroscopy.