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Table 4 Intra-class correlation (ICC) coefficients for the level of agreement between operators and visits (baseline and follow-up) in the healthy subjects and end-stage renal disease groups

From: Reproducibility of carotid-femoral pulse wave velocity in end-stage renal disease patients: methodological considerations

Parameter Groups Inter-operator 95 % CI Between-visits 95 % CI
cf-PWV HS 0.461 0.2 to 0.7 0.570 0.20 to 0.77
ESRD 0.87 0.72 to 0.94 0.830 0.64 to 0.92
AIx@HR75 HS 0.942 0.89 to 0.97 0.914 0.84 to 0.95
ESRD 0.660 0.28 to 0.83 0.864 0.71 to 0.94
CPP HS 0.780 0.6 to 0.88 0.680 0.39 to 0.83
ESRD 0.950 0.90 to 0.98 0.883 0.75 to 0.94
  1. AIx@HR75 augmentation index corrected for heart rate at 75 beats per minute, cf carotid femoral, CI confidence interval, CPP central pulse pressure, ESRD end-stage renal disease, HS healthy subjects