Table 3

Inter-observer concordances of ABI measurements
Method CCC 95%-CI of CCC Bias p-value Correlation
VI 0.70 0.50 0.83 -0.019 0.18 0.71
VI_O 0.71 0.51 0.84 -0.032 0.017 0.73
VI_E 0.73 0.53 0.85 -0.026 0.046 0.74
VE 0.55 0.31 0.73 -0.00042 0.98 0.55
VE_O 0.49 0.23 0.69 -0.010 0.46 0.50
VE_E 0.54 0.21 0.76 -0.024 0.060 0.55
VE_D 0.56 0.16 0.89 -0.023 0.16 0.58

Agreement of first and second ABI measurement for automated methods. We present concordance correlation coefficients, corresponding confidence intervals, bias between observers, p-value of bias and correlation coefficient between observers.

VI/VE = Vicorder/Vascular Explorer standard measurements, VI_O/VE_O = Vicorder/Vascular Explorer corrected by observer, VI_E/VE_E = Vicorder/Vascular Explorer corrected by examiner, VE_D = Deflation method of Vascular Explorer.

Teren et al.

Teren et al. BMC Cardiovascular Disorders 2013 13:81   doi:10.1186/1471-2261-13-81

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