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Table 7 Summary of kappa coefficients for agreement between AO / ASIF and Neer classification by period of experience, according to diagnostic method between specialists and residents (Group 1 x Group 2)

From: Inter-observer reliability of alternative diagnostic methods for proximal humerus fractures: a comparison between attending surgeons and orthopedic residents in training

Diagnostic Method Means Standard Deviation Minimum Maximum 1st. Quartile Median 3rd. Quartile N p
X-ray 0.642 0.310 -0.033 1.000 0.360 0.683 1.000 50 0.498
 Resident 0.619 0.337 −0.033 1.000 0.321 0.726 1.000 30  
 Expert 0.677 0.270 0.167 1.000 0.531 0.683 0.953 20  
Tomography 0.547 0.350 -0.125 1.000 0.231 0.571 0.875 50 0.794
 Resident 0.558 0.376 −0.125 1.000 0.211 0.571 1.000 30  
 Expert 0.531 0.316 −0.108 1.000 0.280 0.586 0.778 20  
3D models 0.687 0.287 -0.050 1.000 0.495 0.787 1.000 50 0.390
 Resident 0.658 0.301 −0.050 1.000 0.437 0.736 0.868 30  
 Expert 0.730 0.265 0.182 1.000 0.525 0.795 1.000 20  
Holography 0.664 0.285 0.069 1.000 0.496 0.673 1.000 50 0.836
 Resident 0.671 0.295 0.087 1.000 0.490 0.675 1.000 30  
 Expert 0.654 0.278 0.069 1.000 0.489 0.666 0.831 20  
  1. p value - Student t-test