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Table 3 Reproducibility statistics for intra-rater and inter-rater variations in measured aortic diameters and flow angles.

From: Hemodynamic predictors of aortic dilatation in bicuspid aortic valve by velocity-encoded cardiovascular magnetic resonance

   Intra-Rater
  Mean Value (mm) Mean Stddev (mm) CV (%) CCC Bland Altman 95% confidence interval of difference (mm)
AOV 23.74 1.17 4.6% 0.926 [-2.59,3.91]
SOV 30.32 0.98 3.2% 0.949 [-2.44,3.00]
STJ 27.42 0.67 2.6% 0.970 [-2.14,1.59]
AA 27.91 0.67 2.3% 0.988 [-1.89,1.79]
  Mean Value (degrees) Mean Stddev (degrees) CV (%) CCC Bland Altman 95% confidence interval of difference (degrees)
FLOW ANGLE 13.7 1.64 12.0% 0.946 [-4.34,4.77]
   Inter-Rater
  Mean Value (mm) Mean Stddev (mm) CV (%) CCC Bland Altman 95% confidence interval of difference (mm)
AOV 23.74 1.33 5.1% 0.893 [-4.94,2.45]
SOV 30.32 1.23 3.9% 0.914 [-4.17,2.62]
STJ 27.42 1.00 3.8% 0.910 [-3.76,1.79]
AA 27.91 0.86 3.0% 0.977 [-1.97,2.78]
  Mean Value (degrees) Mean Stddev (degrees) CV (%) CCC Bland Altman 95% confidence interval of difference (degrees)
FLOW ANGLE 13.7 1.38 10.2% 0.960 [-3.40,4.23]
  1. Data are based on 2 repeat measurements in all (25) subjects. The table gives the estimated standard deviation in repeat measurements based on pair-wise differences, the mean corresponding coefficient of variation, the concordance correlation coefficient{Lin, 1989 #188}, and Bland Altman confidence intervals{Bland, 1986 #246}.