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Table 5 Inter- and intra-rater reliability for determination of SB plane and acetabular axis and volume

From: An accurate method of radiological assessment of acetabular volume and orientation in computed tomography spatial reconstruction

Measurement n Inter-rater agreement - κ (%) Intra-rater agreement - ICC (%) Level of agreement
SB plane 10 0.850 0.900 excellent
3D anteversion angle 20 0.783 0.850 excellent
3D inclination angle 20 0.833 0.850 excellent
3D tilt angle 20 0.883 0.900 excellent
Acetabular volume 20 0.783 0.950 excellent
  1. 3D, three-dimensional; ICC, intra-class correlation coefficient; κ, Fleiss kappa coefficient; SB, sacral base.