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Table 1 Inter- and intra-reader variabilities for re-reading plaque volume (PV) of 45 plaques

From: Reproducibility of 3-dimensional ultrasound readings of volume of carotid atherosclerotic plaque

  Reader 1 Reader 2 Reader 3
Intra-reader variability    
PV reading 1 (μl) 71.8 (42.5) 67.8 (42.8) 70.1 (45.4)
PV reading 2 (μl) 71.6 (43.3) 70.0 (43.0) 71.5 (44.0)
ICC 0.985 0.967 0.969
Inter-reader variability    
PV both readings (μl) 71.7 (42.7) 68.9 (42.2) 70.8 (44.4)
ICC   0.964  
  1. Values are mean (standard deviation); ICC, intra-class correlation coefficient