Three-dimensional printing models increase inter-rater agreement for classification and treatment of proximal humerus fractures

Table 4 Kappa coefficient of agreement between classifications and diagnostic methods among specialists for proximal humerus fractures

AO/OTA versus Neer	3D Models		CT
AO/OTA versus Neer	Kappa	p	Kappa	p
Shoulder surgeon 1	0.518	< 0.001	0.442	< 0.001
Shoulder surgeon 2	0.341	< 0.001	0.260	0.001
Specialist in diagnostic imaging 1	0.315	< 0.001	0.327	< 0.001
Specialist in diagnostic imaging 2	0.443	< 0.001	0.477	< 0.001

ISSN: 1754-9493