Table 5.

Overview of the interobserver agreement between junior surgical residents on conventional radiology versus 3D printed models

Classification	κ for conventional radiology	Agreementa	κ for the 3D model	Agreementa	Difference in κ (95% CI)	p value
Schatzker	0.443	Moderate	0.566	Moderate	-0.123 (-0.178 to -0.069)	< 0.001
AO/OTA	0.282	Fair	0.324	Fair	-0.042 (-0.081 to -0.003)	0.03
Luo three-column	0.433	Moderate	0.548	Moderate	-0.115 (-0.183 to -0.047)	< 0.001

^aAgreement proposed by Landis and Koch [10].